A rail transit vent muffler
A rail transit and air vent technology, applied in the direction of noise suppression, airflow control components, etc., can solve the problems of poor noise reduction effect of rail traffic vent muffler and inability to adjust its own noise reduction effect, etc., to achieve good noise reduction effect and increase The effect of blocking devices
Active Publication Date: 2022-04-12
山西军昊实业有限公司
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Problems solved by technology
[0004] The object of the present invention is to provide a rail transit vent muffler to solve the problems of the rail transit vent muffler having a poor noise reduction effect and being unable to adjust its own noise reduction effect at any time according to the size of the noise, etc.
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[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.
[0026] see Figure 1 to Figure 7 , an embodiment provided by the present invention: a rail transit vent muffler, comprising a housing 1, a treatment tank 77, a sound-absorbing block 14 and a first one-way valve 88, characterized in that: the side wall of the housing 1 is symmetrically provided with treatment Groove 77, the inside of treatment tank 77 is provided with sound-absorbing block 14, and shell 1 side wall is provided with the first one-way valve 88 that process tank 77 and shell 1 interior are communicated, and the upper end of shell 1 is provided with vent 2, vent. The inner side of the connecting block 3 is fixedly installed with the connecting block 3, an...
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The invention discloses a rail transit vent muffler, relates to the technical field of mufflers, and solves the problem that the rail transit vent muffler has poor noise reduction effect and cannot adjust its own noise reduction effect at any time according to the magnitude of the noise. A rail transit vent muffler, comprising a casing, a processing tank, a sound-absorbing block and a first one-way valve, the side wall of the casing is symmetrically provided with a processing groove, the inside of the processing groove is provided with a sound-absorbing block, and the side of the casing is provided with a sound-absorbing block. The wall is provided with a first one-way valve that communicates the treatment tank with the inside of the housing, the upper end of the housing is provided with a vent, and a connecting block is fixedly installed on the inside of the vent, and the inside of the connecting block The connecting rod is fixedly installed. In the present invention, the first baffle is rotated by 90 degrees to cooperate with the fixedly connected second baffle to increase the blocking device. When the flow rate is too high, the blocking device can be adjusted in time to reduce the processing and ensure the noise reduction effect.
Description
technical field [0001] The invention relates to the technical field of mufflers, in particular to a rail transit vent muffler. Background technique [0002] With the rapid development of social economy, the muffler refers to the noise reduction devices such as pipes and elbows with sound-absorbing linings or pipes with sudden changes in cross-sectional area and other pipes with discontinuous acoustic impedance for airflow pipes with noise transmission at the same time. , so that the noise in the pipeline is attenuated or reflected back. The former is called a resistive muffler, and the latter is called a resistive muffler. The material is fixed on the inner wall of the air flow channel or arranged in a certain way in the pipe to form a resistive muffler. When the sound wave enters the resistive muffler, part of the sound energy will be converted into heat energy by friction in the pores of the porous material and dissipated. Attenuates the sound waves passing through the mu...
Claims
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IPC IPC(8): F24F13/24F24F13/10
CPCF24F13/24F24F13/10
Inventor 沈锋
Owner 山西军昊实业有限公司