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Compound exhausting emptying silencer

A muffler and sound absorption technology, applied in the direction of pipes/pipe joints/fittings, general water supply saving, mechanical equipment, etc., to achieve the effect of eliminating high noise, convenient installation, and reducing noise intensity

Active Publication Date: 2016-10-05
XIAMEN JIADA OF ACOUSTIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The noise reduction effect of the currently used muffler is ≤30dB(A)

Method used

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  • Compound exhausting emptying silencer
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Examples

Experimental program
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Effect test

Embodiment Construction

[0026] exist figure 1 , 2 In the shown embodiment, a composite exhaust and venting muffler is composed of a rainproof sound-absorbing umbrella cap (1), an expansion gradient tube (2), a first-stage throttling and pressure-reducing tube (3), a second-stage throttling and pressure-reducing tube (4), the top plate of the throttling and pressure-reducing tube (5), the muffler cylinder (6), the resistive sound-absorbing layer (7), and the installation bearing structure. The bottom port (8) of the expansion gradient pipe (2) is connected to the top (10) of the vent pipe through the flange (9), and the upper port (8) is connected to the first-stage throttling and pressure-reducing pipe (3); The first-stage throttle hole (11) is set on the tube wall of the throttling circular pressure-reducing tube (3); the second-stage throttling and pressure-reducing tube (4) and the first-stage throttling and pressure-reducing tube (3) are concentric circular tubes , the wall of the secondary thr...

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Abstract

The invention discloses a compound exhausting emptying silencer which comprises a rainproof sound-absorbing umbrella cap, an expanding gradual changing pipe, a first level throttling pressure-reducing pipe, a second level throttling pressure-reducing pipe, a throttling pressure-reducing top plate, a blocking sound-absorbing layer, a silencer drum and a mounting force-bearing structure, wherein a bottom port of the expanding gradual changing pipe is connected with the top of an emptying pipe through a flange; an upper port is connected with the first level throttling pressure-reducing pipe; a pipe wall of the first level throttling pressure-reducing pipe is provided with a first-level throttling hole; the second level throttling pressure-reducing pipe and the first level throttling pressure-reducing pipe are both arranged as concentric circular pipes; the pipe wall of the second level throttling pressure-reducing pipe is provided with a second-level throttling hole; a circular air outlet is formed on the upper part of the silencer drum; the rainproof sound-absorbing umbrella cap is arranged on the upper part of the air outlet. The compound exhausting emptying silencer has the advantages of silencing effect more than or equal to 45dB(A), small volume, high strength, convenience in mounting and capability of preventing invasion of sand storm, rain, snow and water.

Description

technical field [0001] The invention relates to a noise control technology, in particular to a composite exhaust and vent muffler installed at a high-pressure exhaust and vent port. Background technique [0002] The noise of high-pressure exhaust venting is mainly caused by the high-speed impact of pressurized gas on the exhaust pipe and the disturbance of surrounding gas caused by sudden pressure drop, mainly gas dynamic noise. The characteristics of exhaust jet noise are high sound level, wide frequency, and long-distance propagation. Especially the low-frequency part of the exhaust jet noise, the low-frequency noise is different from the high-frequency noise, the high-frequency noise can quickly attenuate as the distance gets farther or encounters obstacles, while the low-frequency noise decreases very slowly, and the sound wave is longer. It can easily pass through obstacles, run long distances, and penetrate walls and walls into people's ears. The noise level of high-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L55/033F16L55/027
CPCY02A20/20
Inventor 宋继萍何鹭凤林洁林嘉祥
Owner XIAMEN JIADA OF ACOUSTIC TECH CO LTD
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