CN202946223U - Sleeve-type silencer - Google Patents

Sleeve-type silencer Download PDF

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Publication number
CN202946223U
CN202946223U CN 201220728467 CN201220728467U CN202946223U CN 202946223 U CN202946223 U CN 202946223U CN 201220728467 CN201220728467 CN 201220728467 CN 201220728467 U CN201220728467 U CN 201220728467U CN 202946223 U CN202946223 U CN 202946223U
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CN
China
Prior art keywords
sound
absorbing pipe
bushing type
interior sound
interior
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201220728467
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Chinese (zh)
Inventor
赵冲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hangzhou Shengda High-Tech Electromechanical Co Ltd
Original Assignee
Hangzhou Shengda High-Tech Electromechanical Co Ltd
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Publication date
Application filed by Hangzhou Shengda High-Tech Electromechanical Co Ltd filed Critical Hangzhou Shengda High-Tech Electromechanical Co Ltd
Priority to CN 201220728467 priority Critical patent/CN202946223U/en
Application granted granted Critical
Publication of CN202946223U publication Critical patent/CN202946223U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a sleeve-type silencer. Only a single sound absorbing layer is arranged in the existing silencer, so that the sound silencing effect is poor. The sleeve-type silencer comprises a casing and an outer sound silencing pipe, wherein an inner sound silencing pipe communicated with an air inlet is hung inside the outer sound silencing pipe; one end of the inner sound silencing pipe is connected to the inner edge of the air inlet of the casing through a supporting plate; the other end of the inner sound silencing pipe is in a sealing structure; and an outer cavity communicated with an air outlet is formed between the outer sound silencing pipe and the inner sound silencing pipe. According to the sleeve-type silencer, the built-in inner sound absorbing pipe is arranged additionally on the basis of the original single-layer silencer structure, so that two layers of sound silencing structures exist in the silencer. Therefore, airflows are damped for a plurality of times through the inner and the outer sound absorbing pipes, so that the noise is reduced. In addition, the airflow velocity and the airflow pressure are decreased by a circuitous flow channel between the inner and the outer sound absorbing pipes, so that the noise is further reduced. As a result, the body health of a worker is ensured.

Description

A kind of bushing type baffler
Technical field
The utility model relates to a kind of oxygen nitrogen generator equipment, is specifically related to a kind of noise reduction bushing type baffler.
Background technique
In known technology, the pressure-variable adsorption of Double-Tower Structure (PSA) nitrogen processed, oxygenerating technology are the advanced technologies of nitrogen processed, oxygen at present, and it has the characteristics such as gas purity pollution-free, processed is high, productive rate is high, the overall manufacturing cost is low.This nitrogen processed, oxygenerator have two absorptive separation column alternation gas processed and scavenge, before a tower end-of-job switches to another tower work, the adsorption tower that finishes gas work processed need to scavenge, because this exhaust process is very short, generally need in seconds drained, and air displacement is large, the relevant volume of equipment of exhaust is limited, therefore it is very high to be deflated airspeed and the current density of body, produces thus very large noise.The patent No. is that 201020110236.8 baffler comprises shell and is built in sound-absorption layer in shell, and described sound-absorption layer is single layer structure, and its damping effect to noise is limited, and noise reduction is not obvious, and workers ' health is caused damage.
The model utility content
In order to solve the deficiencies in the prior art, the utility model provides a kind of baffler of effective raising damping effect, and further purpose of the present utility model is to provide the obvious baffler of a kind of noise reduction.
The utility model is realized in the following manner: a kind of bushing type baffler, comprise that two ends are respectively equipped with the tube-like envelope of suction port and air outlet and the outer sound-absorbing pipe of fitting with described shell madial wall, the described outer sound-absorbing pipe inside interior sound-absorbing pipe that is communicated with described suction port that suspends, described interior sound-absorbing Guan Yiduan is connected on the inner edge of described shell suction port by a dunnage, the other end is seal structure, and forms an exocoel that is communicated with described air outlet between described outer sound-absorbing pipe and interior sound-absorbing pipe.Increase by a built-in interior sound-absorbing pipe on the basis of original individual layer muffler structure, make and have two-layer noise-reducing structure in baffler, by inside and outside sound-absorbing pipe to air-flow repeatedly damping realize noise reduction, interior sound-absorbing pipe is communicated with suction port and forms an inner chamber, air-flow enters exocoel after entering inner chamber by suction port and passing described interior sound-absorbing pipe, tortuous runner in utilizing between sound-absorbing pipe and outer sound-absorbing pipe realizes reducing the effect of air-flow velocity and pressure, play the effect of further reduction noise, guarantee that the workman is healthy.
As preferably, described dunnage is ring structure, the internal diameter coupling of ring diameter and described interior sound-absorbing pipe in it, and its outer shroud edge mates with described outer casing inner wall and is connected.Dunnage middle part perforate makes suction port and interior sound-absorbing pipe internal cavity be communicated with and forms inner chamber, support plate edge is connected with the outer casing inner wall coupling, guarantee the isolation of exocoel and inner chamber, make the air-flow in inner chamber to flow into exocoel by interior sound-absorbing pipe, to the effective damping of air-flow and noise reduction.
As preferably, described interior sound-absorbing pipe comprises an interior sound-absorption layer and is located in described interior sound-absorption layer on outer side wall and air guiding layer that coupling is fitted.Interior sound-absorption layer is clamped in two air guiding layers, and air guiding layer plays the effect of fixing interior sound-absorption layer, and air-flow flows in interior sound-absorption layer by air guiding layer, and completes damping, noise reduction process.
As preferably, described outer sound-absorbing pipe comprises an outer sound-absorption layer and is located on described outer sound-absorption layer madial wall and air guiding layer that coupling is fitted.Air-flow flows out from inner chamber and flows to the air outlet by exocoel, and in this process, air-flow enters outer sound-absorption layer by air guiding layer, realizes secondary shock-absorbing, noise reduction process.
As preferably, described air guiding layer is provided with some equally distributed gas ports.Air-flow is realized percolation by described gas port, and guarantees that sound-absorption layer can be to the effective damping of air-flow, noise reduction.
As preferably, described shell two ends are respectively equipped with front shroud and the back shroud of structure in the form of a ring, and described front shroud intermediate openings forms described air outlet, and described back shroud intermediate openings forms described suction port, and arrange with described dunnage parallel interval, be provided with a junction outside described back shroud.The front shroud edge is connected with described outer sound-absorbing pipe sidewall, effectively improves the structural strength of outer sound-absorbing pipe, improves the anti-high pressure draught ability of outer sound-absorbing pipe; Back shroud and dunnage parallel interval arrange, and leave the gap between the two, play the effect of buffering high velocity air, effectively reduce air-flow velocity; Baffler is fastened on predeterminated position by the joint in the back shroud outside.
As preferably, described joint comprises a flange, and described flange is taken over to mate with the suction port of described back shroud by one and is connected.Described baffler is connected on default station by flange, can guarantee join strength, and is also simple in structure, effectively reduces costs.
As preferably, described interior sound-absorbing length of tube is less than described outer sound-absorbing length of tube.Because interior sound-absorbing pipe is shorter than outer sound-absorbing pipe, make whole of interior sound-absorbing pipe submerge in outer sound-absorbing pipe, the air-flow that flows out from interior sound-absorbing pipe also needs to flow out the air outlet by exocoel, offer an opportunity for secondary shock-absorbing, the noise reduction of air-flow, prevent that effectively air-flow from passing interior sound-absorbing pipe and the directly phenomenon generation of outflow air outlet.
The beneficial effects of the utility model: increase by a built-in interior sound-absorbing pipe on the basis of original individual layer muffler structure, make and have two-layer sound-absorption layer structure in baffler, air-flow passes inside and outside sound-absorbing pipe successively, with this, air-flow is realized repeatedly cushioning effect, and the final reduction noise of realizing, in addition, the tortuous runner in also utilizing between sound-absorbing pipe and outer sound-absorbing pipe realizes reducing the effect of air-flow velocity and pressure, play the effect of further reduction noise, guarantee that the workman is healthy.
Description of drawings
Fig. 1 is the utility model sectional structure schematic diagram;
In figure: 1, suction port, 2, the air outlet, 3, shell, 4, outer sound-absorbing pipe, 5, interior sound-absorbing pipe, 6, dunnage, 7, exocoel, 8, interior sound-absorption layer, 9, air guiding layer, 10, outer sound-absorption layer, 11, gas port, 12, front shroud, 13, back shroud, 14, joint, 15, flange, 16, take over 17, inner chamber.
Embodiment
Below in conjunction with specification drawings and specific embodiments, substantive distinguishing features of the present utility model is further described.
A kind of bushing type baffler as shown in Figure 1, comprise that two ends are respectively equipped with the tube-like envelope 3 of suction port 1 and air outlet 2 and the outer sound-absorbing pipe 4 of fitting with described shell 3 madial walls, the described outer sound-absorbing pipe 4 inside interior sound-absorbing pipe 5 that is communicated with described suction port 1 that suspends, described interior sound-absorbing pipe 5 one ends are connected on the inner edge of described shell 3 suction ports 1 by a dunnage 6, the other end is seal structure, and forms an exocoel 7 that is communicated with described air outlet 2 at described outer sound-absorbing pipe 4 and 5 of interior sound-absorbing pipes; Described dunnage 6 is ring structure, the internal diameter coupling of ring diameter and described interior sound-absorbing pipe 5 in it, and its outer shroud edge mates with described shell 3 inwalls and is connected; Described interior sound-absorbing pipe 5 comprises an interior sound-absorption layer 8 and is located on the interior outer side wall of described interior sound-absorption layer 8 and mates the air guiding layer 9 of fitting; Described outer sound-absorbing pipe 4 comprises an outer sound-absorption layer 10 and is located on described outer sound-absorption layer 10 madial walls and mates the air guiding layer 9 of fitting; Described air guiding layer 9 is provided with some equally distributed gas ports 11; Described shell 3 two ends are respectively equipped with front shroud 12 and the back shroud 13 of structure in the form of a ring, described front shroud 12 intermediate openings form described air outlet 2, described back shroud 13 intermediate openings form described suction port 1, and with described dunnage 6 parallel interval settings, described back shroud 13 outsides are provided with a junction 14; Described joint 14 comprises a flange 15, and described flange 15 is taken over 16 by one and is connected with suction port 1 coupling of described back shroud 13; Described interior sound-absorbing pipe 5 length are less than described outer sound-absorbing pipe 4 length.
In specific operation, flow velocity high pressure draught is faster realized the noise reduction discharging by following steps:
1, air-flow enters baffler by suction port 1, and the preset clearance that dunnage 6 and back shroud are 13 plays buffer function to air-flow;
2, air-flow enters in the inner chamber 17 of interior sound-absorbing pipe 5, the whole inwall that spreads all over interior sound-absorbing pipe 5 due to gas port 11, in air-flow is imported by gradation in batches in sound-absorption layer 8, and complete damping, noise reduction process in interior sound-absorption layer 8, this process can effectively reduce stream pressure and flow velocity;
The air-flow of 3, discharging from interior sound-absorbing pipe 5 enters in exocoel 7 by the air guiding layer 9 on interior sound-absorption layer 8 outer side walls, and pressed to air outlet 2 by the gas of follow-up discharge, in this process, air-flow in exocoel 7 can enter by the gas port 11 on air guiding layer 9 outer sound-absorption layer 10, and realize secondary shock-absorbing, noise reduction process in sound-absorption layer 10 outside, further reduce the impact of noise.
4, enter in air through relief opening through the air-flow after outer sound-absorption layer 10 dampings, noise reduction process.
In practical operation, described joint 14 is connected on default station by flange 15, also can connect by modes such as welding, be spirally connected, all should be considered as specific embodiment of the utility model.
In practical operation, described outer sound-absorption layer 10 and interior sound-absorption layer 8 are ventilative sound-absorbing material, both can so that air-flow slowly passes, can also reduce noise.
In practical operation, be evenly distributed with some gas ports 11 on described air guiding layer 9, can adopt the less and a fairly large number of distribution mode of diameter, both guaranteed that air-flow passed through efficient, also effectively reduce pneumatic noise.

Claims (8)

1. bushing type baffler, comprise that two ends are respectively equipped with the tube-like envelope (3) of suction port (1) and air outlet (2) and the outer sound-absorbing pipe (4) of fitting with described shell (3) madial wall, it is characterized in that described outer sound-absorbing pipe (4) the inside interior sound-absorbing pipe (5) that is communicated with described suction port (1) that suspends, described interior sound-absorbing pipe (5) one ends are connected on the inner edge of described shell (3) suction port (1) by a dunnage (6), the other end is seal structure, and form an exocoel (7) that is communicated with described air outlet (2) between described outer sound-absorbing pipe (4) and interior sound-absorbing pipe (5).
2. a kind of bushing type baffler according to claim 1, is characterized in that described dunnage (6) is ring structure, the internal diameter coupling of ring diameter and described interior sound-absorbing pipe (5) in it, and its outer shroud edge mates with described shell (3) inwall and is connected.
3. a kind of bushing type baffler according to claim 2, is characterized in that described interior sound-absorbing pipe (5) comprises an interior sound-absorption layer (8) and is located on the interior outer side wall of described interior sound-absorption layer (8) and mates the air guiding layer (9) of fitting.
4. a kind of bushing type baffler according to claim 1, is characterized in that described outer sound-absorbing pipe (4) comprises an outer sound-absorption layer (10) and is located on described outer sound-absorption layer (10) madial wall and mates the air guiding layer (9) of fitting.
5. according to claim 3 or 4 described a kind of bushing type bafflers, is characterized in that described air guiding layer (9) is provided with some equally distributed gas ports (11).
6. a kind of bushing type baffler according to claim 1, it is characterized in that described shell (3) two ends are respectively equipped with the front shroud of structure (12) and back shroud (13) in the form of a ring, described front shroud (12) intermediate openings forms described air outlet (2), described back shroud (13) intermediate openings forms described suction port (1), and with described dunnage (6) parallel interval setting, be provided with a junction (14) outside described back shroud (13).
7. a kind of bushing type baffler according to claim 6, is characterized in that described joint (14) comprises a flange (15), and described flange (15) is taken over (17) by one and is connected with suction port (1) coupling of described back shroud (13).
8. a kind of bushing type baffler according to claim 1, is characterized in that described interior sound-absorbing pipe (5) length is less than described outer sound-absorbing pipe (4) length.
CN 201220728467 2012-12-25 2012-12-25 Sleeve-type silencer Expired - Fee Related CN202946223U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220728467 CN202946223U (en) 2012-12-25 2012-12-25 Sleeve-type silencer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220728467 CN202946223U (en) 2012-12-25 2012-12-25 Sleeve-type silencer

Publications (1)

Publication Number Publication Date
CN202946223U true CN202946223U (en) 2013-05-22

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103411442A (en) * 2013-06-27 2013-11-27 朱忠林 Vertical air-cooled condenser
CN103982273A (en) * 2014-05-28 2014-08-13 成都陵川特种工业有限责任公司 Laterally-open through groove silencer
CN111271540A (en) * 2020-02-20 2020-06-12 河南华隆电气设备有限公司 Air inlet silencing device for positive pressure type analysis room
CN112303030A (en) * 2019-07-29 2021-02-02 无锡小天鹅电器有限公司 Silencer and clothes treatment equipment

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103411442A (en) * 2013-06-27 2013-11-27 朱忠林 Vertical air-cooled condenser
CN103411442B (en) * 2013-06-27 2015-05-06 朱忠林 Vertical air-cooled condenser
CN103982273A (en) * 2014-05-28 2014-08-13 成都陵川特种工业有限责任公司 Laterally-open through groove silencer
CN112303030A (en) * 2019-07-29 2021-02-02 无锡小天鹅电器有限公司 Silencer and clothes treatment equipment
CN111271540A (en) * 2020-02-20 2020-06-12 河南华隆电气设备有限公司 Air inlet silencing device for positive pressure type analysis room

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130522

Termination date: 20191225

CF01 Termination of patent right due to non-payment of annual fee