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A muffler and an air induction device for an asphalt mixture mixer using the muffler

A kind of technology of asphalt mixture and agitator, which is applied in the direction of road, construction, road repair, etc., can solve the problem of unsatisfactory noise reduction effect of induced draft fan, and achieve the effect of eliminating noise and reducing noise

Active Publication Date: 2022-05-24
FUJIAN TIETUO MACHINERY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a muffler and an air-inducing device of an asphalt mixture mixer using the muffler, the main purpose of which is to overcome the defect that the sound-absorbing effect of the induced draft fan in the asphalt mixture mixing equipment is not ideal

Method used

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  • A muffler and an air induction device for an asphalt mixture mixer using the muffler
  • A muffler and an air induction device for an asphalt mixture mixer using the muffler
  • A muffler and an air induction device for an asphalt mixture mixer using the muffler

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Embodiment Construction

[0030] Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0031] refer to figure 1 , figure 2 and image 3 . A muffler 100 includes a housing 1, the housing 1 has an inlet 11 and an outlet 12, at least one muffler cover 2 is installed inside the housing 1, and the sidewall of the muffler cover 2 is provided with evenly distributed throttle holes 21 The inner wall of the casing 1 is provided with a sound-absorbing layer 13; the air flow can enter the interior of the muffler cover 2 through the inlet 11 of the casing, and then pass through the throttle hole 21 to contact the sound-absorbing layer 13, and finally exit through the outlet 12 of the casing. The design of the muffler in the present invention enables the airflow to enter the muffler cover 2 after passing through the inlet 11 of the casing. When the sound passes through the orifice 21, the sound wave interferes, and the sound energy is converted into...

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Abstract

A muffler and an air induction device for an asphalt mixture mixer using the muffler. The muffler includes a shell with an inlet and an outlet. The inside of the shell is equipped with at least one muffler cover. The side wall of the muffler is provided with a There are evenly distributed orifices, and the inner wall of the shell is provided with a sound-absorbing layer; the airflow can pass through the inlet of the shell and enter the interior of the sound-absorbing cover, then pass through the orifice to contact the sound-absorbing layer, and finally pass through the shell. Exit discharge. The invention enables the airflow to enter the muffler cover after passing through the inlet of the shell, and when the sound passes through the orifice, the sound wave interferes, and the sound energy is converted into heat energy during the sound wave interference, which reduces a part of the sound energy and reduces a part of the noise; When the airflow continues to flow until it contacts the inner wall of the shell, the noise can be further reduced, thereby achieving an effective noise reduction effect.

Description

technical field [0001] The invention relates to the field of fitting parts of asphalt mixing and stirring equipment, in particular to a muffler and an air induction device for an asphalt mixture mixer using the muffler. Background technique [0002] At present, noise pollution has become a public hazard. The induced draft fan, the largest noise source of asphalt mixing equipment, can reach more than 100 decibels. The noise of the induced draft equipment of the asphalt mixture mixer can be divided into the wind noise of the induced draft fan body, the mechanical noise when the induced draft fan is running, and the exhaust noise of the exhaust pipe. And these noises are a kind of noise in which medium, low frequency and pulsation change each other. The currently adopted method of installing a muffler on the exhaust pipe at the outlet of the induced draft fan can only simply deal with the noise of the exhaust pipe. SUMMARY OF THE INVENTION [0003] The invention provides a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C19/10
CPCE01C19/1009E01C2019/1081
Inventor 张俊峰刘名洮吴兆锋
Owner FUJIAN TIETUO MACHINERY
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