CN210068266U - Adjustable expansion cavity type silencer - Google Patents
Adjustable expansion cavity type silencer Download PDFInfo
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- CN210068266U CN210068266U CN201920057238.6U CN201920057238U CN210068266U CN 210068266 U CN210068266 U CN 210068266U CN 201920057238 U CN201920057238 U CN 201920057238U CN 210068266 U CN210068266 U CN 210068266U
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Abstract
The utility model provides an adjustable expansion chamber formula silencer belongs to vehicle accessories technical field. The silencer comprises an expansion cavity on a pipeline, wherein a partition plate and a driving mechanism for driving the partition plate are arranged in the expansion cavity; the partition plate is in sliding sealing fit with the inner side wall of the expansion cavity to divide the expansion cavity into a first cavity communicated with the pipeline and a second cavity not communicated with the pipeline; the driving mechanism is arranged in the second chamber and is a stud nut mechanism, the partition plate is fixed at one end of a stud, the nut is assembled at the other end of the stud, and the nut is connected with a motor; the axial direction of the stud is vertical to the axial direction of the pipeline. The utility model has the advantages that: the driving mechanism is arranged in the second cavity and does not protrude out of the expansion cavity, and the silencer is convenient to assemble when being matched with other equipment for use; meanwhile, the size of the first cavity is adjusted by controlling the partition plate to ascend and descend through the motor, manual adjustment is not needed, and operation is convenient.
Description
Technical Field
The utility model relates to an adjustable expansion chamber formula silencer belongs to vehicle accessories technical field.
Background
In the research and development process of the intake and exhaust silencer of the vehicle at present, after the intake and exhaust silencer is designed, a rapid sample piece needs to be manufactured, then the rapid sample piece is used for test verification, if the sample piece parameters are proper and the intake and exhaust silencing effect is good, formal structure design of the silencer is carried out according to the sample piece parameters; if the sample piece parameters are not appropriate and the intake and exhaust silencing effects are not ideal, the sample piece parameters need to be adjusted, the rapid sample piece is manufactured again, and repeated tests are carried out to determine the optimal silencing effect, so that the workload is increased, the waste of time and money is caused, the research and development period is prolonged, and the research and development progress is influenced.
The utility model discloses a utility model patent document with publication number CN203857657U, entitled "air conditioner and silencer thereof", discloses a silencer, which comprises a shell, an adjusting mechanism movably connected with the shell, and a metal sheet accommodated in the shell and fixedly connected with the adjusting mechanism, wherein the metal sheet divides the shell into an expansion chamber communicating an air inlet and an air outlet of the shell, the depth of the expansion chamber can be changed by adjusting the adjusting mechanism in the research and development stage of the silencer, the purpose of adjusting the sound eliminating volume of the silencer is achieved, a sample piece does not need to be made again, the adjusting process is simple, the workload is low, and the research and development period is shortened; however, there are also the following problems: 1) because the adjusting mechanism of the silencer is positioned outside the shell, when the silencer is matched with other equipment for use, the assembly is inconvenient; 2) when the volume of eliminating the silencer is adjusted, need manual regulation adjustment mechanism, in some special experimental environment, can lead to staff's operation inconvenience.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an adjustable expansion chamber formula silencer for the manual adjustment mechanism who solves the silencer in the prior art is located the casing outside, can cause assembly and the inconvenient problem of operation.
In order to achieve the purpose, the utility model provides an adjustable expansion cavity type silencer, which comprises an expansion cavity on a pipeline, wherein a partition plate and a driving mechanism for driving the partition plate are arranged in the expansion cavity; the partition plate is in sliding sealing fit with the inner side wall of the expansion cavity to divide the expansion cavity into a first cavity communicated with the pipeline and a second cavity not communicated with the pipeline; the driving mechanism is arranged in the second chamber and is a stud nut mechanism, the partition plate is fixed at one end of a stud, the nut is assembled at the other end of the stud, and the nut is connected with a motor; the axial direction of the stud is vertical to the axial direction of the pipeline; the first chamber includes an inlet for connection with a conduit and an outlet for connection with the conduit.
The utility model has the advantages that: firstly, a motor is utilized to drive a nut to rotate, a stud is driven to lift, then a partition plate is controlled to lift, the cross section area of a first cavity can be flexibly adjusted, the purpose of changing the noise elimination effect of a silencer is achieved, in the research and development process, sample pieces do not need to be repeatedly manufactured, the research and development period can be effectively shortened, the research and development speed is improved, and the capital investment is reduced; secondly, the driving mechanism is arranged inside the second cavity, so that the driving mechanism does not protrude out of the expansion cavity, and the silencer does not occupy the space of other equipment when being matched with other equipment for use, and is convenient to assemble; and thirdly, the size of the first cavity is adjusted by controlling the partition plate to ascend and descend through the motor, manual adjustment is not needed, and operation is convenient.
In order to control the lifting direction and the lifting distance of the partition board, as an improvement of the adjustable expansion cavity type silencer, a motor controller for controlling a motor is further installed outside the expansion cavity.
In order to facilitate the assembly of the silencer, as another improvement of the above-mentioned muffler, the pipe includes an inlet pipe and an outlet pipe, and the inlet pipe and/or the outlet pipe has threads.
Drawings
Fig. 1 is a schematic structural view of an adjustable expansion chamber type muffler in embodiment 1 of the present invention;
fig. 2 is a schematic structural view of an adjustable expansion chamber type muffler in embodiment 2 of the present invention;
in the figure, 1, the lumen is expanded; 2. an air inlet pipe; 3. a motor controller; 4. a motor; 5. a stud; 6. a partition plate; 7. an air outlet pipe; 8. a first chamber; 9. a second chamber; 11. an expansion lumen; 12. an air inlet pipe; 12-1, air inlet pipe threads; 17. an air outlet pipe; 17-1 and air outlet pipe threads.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
The noise frequency formula of the expansion cavity type silencer is as follows:
wherein STL is a sound attenuation value, M is a cross-sectional area of the intake pipe, N is a cross-sectional area of the first chamber, D is a length of the first chamber, and k is a noise wave number.
The utility model discloses a size of the cross sectional area N of adjusting first cavity seeks the best noise elimination effect of silencer.
Example 1:
with reference to fig. 1, the muffler with an adjustable expansion cavity according to embodiment 1 of the present invention includes an expansion cavity 1 on a pipe, the pipe includes an air inlet pipe 2 and an air outlet pipe 7, and a partition plate 6 and a driving mechanism for driving the partition plate 6 are disposed in the expansion cavity 1; the clapboard 6 is in sliding seal fit with the inner side wall of the expansion cavity 1 to divide the expansion cavity 1 into a first cavity 8 communicated with the pipeline and a second cavity 9 not communicated with the pipeline; the driving mechanism is arranged in the second chamber 9 and is a stud and nut mechanism, the partition plate 6 is fixed at one end of the stud 5, the nut is assembled at the other end of the stud 5, and the nut is connected with the motor 4; the axial direction of the stud 5 is perpendicular to the axial direction of the pipe.
The length of the stud 5 determines the maximum distance that the partition plate 6 can move, and thus determines the maximum value and the minimum value of the noise elimination value of the silencer; meanwhile, the nut should have a certain length to ensure a distance that the stud 5 can be lifted or lowered.
In the embodiment, the air inlet pipe 2 and the air outlet pipe 7 are integrally formed with the expansion cavity 1; in another embodiment, the inlet pipe 2 and the outlet pipe 7 may be separately assembled with the expansion chamber 1, for example, by welding.
In this embodiment, the connection mode of the motor 4 and the nut is direct connection, for example, the motor 4 and the nut are coaxially connected; as another embodiment, the connection mode of the motor 4 and the nut may also be transmission connection, and at this time, a transmission mechanism needs to be added, and the motor 4 and the nut may not be coaxially connected.
In the research and development process, the motor 4 is used for driving the nut to rotate to drive the stud 5 to lift, so that the partition plate 6 is controlled to lift, the size of the cross section area N of the first cavity 8 can be flexibly adjusted, the purpose of changing the noise elimination effect of the silencer is achieved, sample pieces do not need to be repeatedly manufactured, the research and development period can be effectively shortened, the research and development speed is increased, and the capital investment is reduced; moreover, the driving mechanism is arranged in the second cavity 9, so that the driving mechanism does not protrude out of the expansion cavity 1, and when the silencer is matched with other equipment for use, the silencer does not occupy the space of other equipment, and is convenient to assemble; meanwhile, the size of the first chamber 8 is adjusted by controlling the partition plate 6 to ascend and descend through the motor 4, manual adjustment is not needed, and operation is convenient.
In order to control the lifting direction and the lifting distance A of the partition board 6, a motor controller 3 for controlling a motor 4 is also arranged outside the expansion cavity 1; as another embodiment, the motor controller 3 may be installed inside the second chamber 9 as long as the control line of the motor controller 3 is outside the expansion chamber 1.
Example 2:
with reference to fig. 2, the embodiment 2 of the present invention provides an adjustable expansion chamber muffler, which comprises an expansion chamber 11, and an air inlet pipe 12 and an air outlet pipe 17 integrally formed with the expansion chamber 11, and is the same as the embodiment 1.
The air inlet pipe thread 12-1 and the air outlet pipe thread 17-1 can be used in cooperation with other equipment, so that the silencer is convenient to assemble; in another embodiment, only the inlet pipe 12 or the outlet pipe 17 may be threaded.
Claims (3)
1. An adjustable expansion chamber type muffler is characterized in that: the pipeline expansion device comprises an expansion cavity on a pipeline, wherein a partition plate and a driving mechanism for driving the partition plate are arranged in the expansion cavity; the partition plate is in sliding sealing fit with the inner side wall of the expansion cavity to divide the expansion cavity into a first cavity communicated with the pipeline and a second cavity not communicated with the pipeline; the driving mechanism is arranged in the second chamber and is a stud nut mechanism, the partition plate is fixed at one end of a stud, the nut is assembled at the other end of the stud, and the nut is connected with a motor; the axial direction of the stud is vertical to the axial direction of the pipeline; the first chamber includes an inlet for connection with a conduit and an outlet for connection with the conduit.
2. The variable expansion chamber muffler according to claim 1, wherein: and a motor controller for controlling the motor is also arranged outside the expansion cavity.
3. The variable expansion chamber muffler according to claim 1 or 2, wherein: the pipeline comprises an air inlet pipe and an air outlet pipe, and the air inlet pipe and/or the air outlet pipe are/is provided with threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920057238.6U CN210068266U (en) | 2019-01-14 | 2019-01-14 | Adjustable expansion cavity type silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920057238.6U CN210068266U (en) | 2019-01-14 | 2019-01-14 | Adjustable expansion cavity type silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210068266U true CN210068266U (en) | 2020-02-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920057238.6U Active CN210068266U (en) | 2019-01-14 | 2019-01-14 | Adjustable expansion cavity type silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210068266U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112873538A (en) * | 2021-03-25 | 2021-06-01 | 福建信达机械有限公司 | Noise control device for dust treatment of urban commercial concrete mixing plant |
-
2019
- 2019-01-14 CN CN201920057238.6U patent/CN210068266U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112873538A (en) * | 2021-03-25 | 2021-06-01 | 福建信达机械有限公司 | Noise control device for dust treatment of urban commercial concrete mixing plant |
| CN112873538B (en) * | 2021-03-25 | 2022-06-14 | 福建信达机械有限公司 | Noise control device for dust treatment of urban commercial concrete mixing plant |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 450061 Yudao Road, Guancheng District, Zhengzhou City, Henan Province Patentee after: Yutong Bus Co.,Ltd. Address before: 450061 Yudao Road, Guancheng District, Zhengzhou City, Henan Province Patentee before: ZHENGZHOU YUTONG BUS Co.,Ltd. |