Steam discharging exhaust noise eliminating device
A technology for air exhaust and muffler device, which is applied in the direction of sound-producing equipment, instruments, etc., and can solve problems such as inability to meet requirements.
Inactive Publication Date: 2011-05-18
无锡世一电力机械设备有限公司
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Problems solved by technology
In terms of noise control, although the 35dB(A) noise reduction effect can also be achieved, it can no longer meet the requirements when the environmental protection requirements are stricter.
Method used
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Embodiment approach
[0023] In another embodiment of the steam-to-air exhaust muffler of the present invention, the fibrous muffling material 4 between the porous plate 3 and the inlet porous pipe 1 and the shell 2 is glass fiber muffling cotton, and the shell 2 and the inlet Two porous plates 3 connected with the inlet porous pipe in the circumferential direction are arranged between the porous pipes 1, and the two porous plates 3 and the inlet porous pipes are arranged in the circumferential direction between the casing 2 and the inlet porous pipe 1. Connected vertically, the aperture of the porous plate 3 is 5 times the aperture of the inlet porous tube 1.
[0024] With this structure, the noise reduction effect can be further improved without increasing the size of the muffler, the cost is reduced, and it is more environmentally friendly.
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The invention discloses a steam discharging exhaust noise eliminating device, which comprises a built-in silencer formed by a micropore silencer, wherein one end of an inlet perforated pipe of the built-in silencer is communicated with an exhaust pipeline, and the other end of the inlet perforated pipe is sealed by using an upper seal head; a shell is arranged outside the inlet perforated pipe; one end of the shell close to the exhaust pipeline is in hermetic connection with the inlet perforated pipe, and an air outlet is formed at the other end of the shell and is connected with the outside; a plurality of perforated plates connected with the inlet perforated pipe in the circumferencial direction are arranged between the shell and the inlet perforated pipe; one of the perforated plates is arranged on one side closed to the exhaust pipeline, and one perforated plate is arranged at the position close to air outlet of the shell; and a fibrous noise eliminating material is filled into an annular air chamber enclosed by the perforated plates, the shell and the inlet perforated pipe, so compared with the simple micropore silencer, the noise eliminating device has the better noise reducing effect.
Description
Technical field [0001] The invention relates to a resistive muffler, and more specifically, to a muffler that uses sound-absorbing materials and the principle of microporous sound-absorbing to control the exhaust noise of containers, equipment and pipelines. Background technique [0002] A common muffler is a resistive muffler that uses glass wool on the inner surface of the iron pipe and a perforated sound-transmitting finish (to prevent the glass fiber from being carried away by the airflow). The principle of sound absorption is to use the sound resistance of the sound-absorbing material to the airflow. . The resistive muffler can be divided into straight tube type, chip type, labyrinth type, baffle type, elbow type and other forms according to the geometric shape of the air flow channel. Generally speaking, the resistive muffler has good mid-to-high frequency noise reduction characteristics, but poor performance in low frequency noise reduction. In order to improve the silen...
Claims
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IPC IPC(8): G10K11/162
Inventor 辛发琴辛军秦德安
Owner 无锡世一电力机械设备有限公司