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Reactive muffler for engineering machine

A technology for resistant noise reduction and engineering machinery, which is applied in the direction of mechanical equipment, machines/engines, noise reduction devices, etc., can solve problems such as insignificant sound absorption effects, achieve reasonable flow direction, good noise reduction effect, and increase noise reduction Effect

Inactive Publication Date: 2012-07-25
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the noise problem it generates has been an urgent problem to be solved
However, this patent is a purely resistant muffler without the use of sound-absorbing materials, and the sound-absorbing effect in the middle and high frequency bands is not obvious

Method used

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  • Reactive muffler for engineering machine
  • Reactive muffler for engineering machine
  • Reactive muffler for engineering machine

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0017] Such as figure 1 , figure 2 As shown in , the resistant muffler for construction machinery includes a flange 7, a connecting pipe 15, a cylinder body 6, and a smoke exhaust pipe 1, and the cylinder body 6 is provided with a front partition 4 and a rear partition 13, The cylinder body 6 is divided into chamber I17, chamber II18, and chamber III19 in sequence; the connecting pipe 15 and the exhaust pipe 1 are vertically connected with the cylinder body 6, and the exhaust pipe 1 is arranged on the cylinder body through the exhaust pipe seat 2 6; the connecting pipe 15 and the smoke exhaust pipe 1 are vertically intersected in space, and the connecting pipe 15 and the smoke exhaust pipe 1 communicate with the chamber I17 and the chamber III19 respectively; the flange 7 is connected with the chamber I17 through the connecting pipe 15 There are two ...

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Abstract

The invention discloses a reactive muffler for an engineering machine, which comprises a flange plate, a connecting pipe, a barrel and a smoke exhaust pipe. The inside of the barrel is sequentially divided into a cavity I, a cavity II and a cavity III by a front partition board and a rear partition board from front to back, two first sound attenuation barrels which are positioned in the cavity I and the cavity II are disposed on the front partition board, two second sound attenuation barrels are arranged in the cavity II, a third sound attenuation barrel is disposed in the cavity III, the first sound attenuation barrels and the second sound attenuation barrels are arranged along the axial direction of the barrel, the third sound attenuation barrel is perpendicular to the first sound attenuation barrels and the second sound attenuation barrels, the connecting pipe and the smoke exhaust pipe are perpendicularly connected onto the barrel and are spatially perpendicularly arranged in a crossed manner, the connecting pipe is communicated with the cavity I, the smoke exhaust pipe is communicated with the cavity III, and the flange plate is connected with the cavity I via the connecting pipe. The reactive muffler is reasonable in structure, fine in acoustic performance and long in service life, regenerated noise of airflow is low, and a muffler effect for low, medium and high-frequency noise of exhaust of an engine is remarkable.

Description

technical field [0001] The invention relates to a muffler, in particular to a resistant muffler for engineering machinery. Background technique [0002] As an important part of social development, construction machinery is mainly used in industry, agriculture, transportation and other fields. However, the noise problem it generates has been an urgent problem to be solved. Resistant mufflers are widely used in the exhaust system of automobile internal combustion engines, and have been widely used in construction machinery and other fields. The research and development of mufflers with good performance is of great significance. Due to the harsh operating conditions of construction machinery and the vibration of power and working devices (engine, hydraulic system and transmission system, etc.), strong vibration and noise will be generated during operation. With the development of modern construction projects. Construction machinery is becoming more and more complex, large-sc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N13/00F01N1/10
Inventor 周以齐王丽方建华薛源窦青青徐新东
Owner SHANDONG UNIV
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