Silencer capable of adjusting silencing capacity
By designing a slipable movable silence unit and a fixed silence unit in the silencer, combining the limiting assembly and connecting rod, the adjustment of sound silence volume and resistance loss is achieved, the problem of excessive use of existing noise control equipment during the daytime period is solved, and energy consumption and resource waste are reduced.
Patent Information
- Application Number
- CN202421118333.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-22
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-05-22
AI Technical Summary
The noise performance parameters of existing noise control equipment are fixed and unadjustable, resulting in excessive and unnecessary use during the daytime period, increasing noise reduction investment and resource waste, and at the same time, high noise reduction leads to large losses of resistance and increasing energy consumption.
A muffler that can adjust the sound silence volume is designed. By setting a multi-piece fixed sound silence unit and a multi-piece movable sound silence unit in the muffler, the movable sound silence unit slides in a parallel to the surface of its own panel and perpendicular to the length of the movable sound silence unit. Combined with the limiting component and the connecting rod, the adjustment of sound silence quantity and resistance loss is achieved.
By adjusting the position of the active silence unit, the silencer can be adjusted appropriately between day and night, meeting the noise reduction needs, while reducing energy consumption and avoiding waste of resources.
Smart Images
Figure CN222826083U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of noise reduction equipment, in particular to a muffler with adjustable sound reduction amount. Background Art
[0002] The commonly used technical measures for noise control are sound absorption, sound insulation, sound elimination and vibration reduction, and the corresponding equipment is sound absorbers, sound insulation panels, silencers and vibration dampers, etc. According to relevant national mandatory standards, noise control facilities such as sound barriers, sound absorption and insulation panels and silencers are often required in industrial enterprises, construction sites and offices to reduce the impact of industrial equipment and social life noise on the surrounding environment.
[0003] The current national standard for noise emission limits stipulates that for the same level of acoustic environment functional areas, the daytime noise limit is 10dB higher than the nighttime limit. When the noise source equipment is running stably for 24 hours, the noise reduction equipment selected to meet the noise standards during the nighttime period is excessive and unnecessary during the daytime period. However, the noise performance parameters of commonly used noise control equipment are fixed and cannot be adjusted, so noise reduction equipment must be selected according to the nighttime standards, which increases noise reduction investment and causes a certain waste of resources.
[0004] In engineering practice, the noise reduction and resistance loss of the resistive muffler are related to the flow rate. When the noise reduction is high, the resistance loss is also large. In order to maintain a certain air flow rate, a larger power device is required when the resistance loss is large, resulting in increased energy consumption. Utility Model Content
[0005] In view of the above problems, the utility model provides a muffler with adjustable sound reduction volume.
[0006] In order to achieve the above-mentioned invention object, the technical solution adopted by the utility model is as follows:
[0007] Provided is a silencer with adjustable sound attenuation, comprising a shell, wherein a mounting channel penetrating two ends of the shell is provided in the shell, a silencer unit assembly is built in the mounting channel, the silencer unit assembly comprises a plurality of fixed silencer units and a plurality of movable silencer units, the fixed silencer units and the movable silencer units are staggered and arranged in parallel at intervals, the movable silencer unit is slidably arranged in the shell along a direction parallel to its own plate surface and perpendicular to the length of the movable silencer unit, a limit assembly for limiting the sliding of the movable unit is provided in the shell, and along the sliding direction of the movable silencer unit, the length of the movable silencer unit and the length of the fixed silencer unit are both smaller than the length of the shell.
[0008] Furthermore, a connecting rod is provided on the same side of the multiple active silencer units, and the connecting rod is fixedly connected to the multiple active silencer units at the same time.
[0009] Furthermore, the outer shell is composed of a top plate, a bottom plate and two side plates parallel to the silencer unit. The top plate, the bottom plate and the two side plates are all outer plates, first sound-absorbing materials, and first face shield hole panel structures arranged in sequence. The outer plate is located on the side away from the installation channel, and the face shield hole panel is located on the side facing the installation channel.
[0010] Furthermore, a hanging rail is provided on the bottom wall of the top plate along the sliding direction of the movable muffler unit, a plurality of first connecting members extending into the hanging rail are fixedly provided on the top of the movable muffler unit, hanging wheels are rotatably provided on both sides of the first connecting members, the rotation axis of the hanging wheels is perpendicular to the plate surface of the movable muffler unit, and the hanging wheels are rollingly connected in the hanging rail;
[0011] A guide track is arranged on the top wall of the bottom plate, and a plurality of second connecting members extending into the guide track are fixedly arranged at the bottom of the movable silencer unit, and a guide wheel is rotatably arranged on the second connecting member, and the rotation axis of the guide wheel is arranged vertically, and the guide wheel is in rolling contact with the inner side wall of the guide track.
[0012] Furthermore, the fixed silencer unit and the movable silencer unit are both composed of a second face shield panel, a frame, and a second sound-absorbing material. Both side panels of the fixed silencer unit and the movable silencer unit are second face shield panels. The frame is arranged between the second face shield panels on both sides and supports the second face shield panels on both sides. The second sound-absorbing material is filled between the two second face shield panels.
[0013] Furthermore, the limiting assembly includes a sliding latch, and a plurality of pin holes are provided on the bottom wall of the top plate at intervals along the sliding direction of the movable silencer unit, and the movement of the movable silencer unit is limited by the latch engaging with the pin holes.
[0014] Furthermore, the limiting assembly includes a movable plug block slidably arranged on one side of the movable silencer unit along the thickness direction of the movable silencer unit, a plurality of positioning blocks are fixedly arranged on the bottom wall of the top plate at intervals along the sliding direction of the movable silencer unit, a positioning groove adapted to the positioning block is opened on the movable plug block, magnetic parts for mutual magnetic attraction are arranged on the side walls of the positioning block and the inner walls of the positioning groove, and also includes a connecting rod, which is fixedly connected to the movable plug block on each movable silencer unit at the same time.
[0015] The beneficial effect of the utility model is that by sliding the movable silencer unit in the silencer, the movable silencer unit is overlapped or staggered with the fixed silencer unit, thereby changing the flow rate and silencer volume in the installation channel, as well as the resistance loss caused by the airflow passing through the silencer. The operator can appropriately adjust the position of the movable silencer unit between day and night to meet the energy saving needs under the premise of noise reduction. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the overall structure of the muffler of Example 1 of the present application.
[0017] Figure 2 This is a schematic diagram of the front cross-sectional structure of Example 1 of the present application.
[0018] Figure 3 This is a schematic diagram of the maximum flow rate state of the muffler in Example 1 of the present application.
[0019] Figure 4 This is a schematic diagram of the semi-open state of the muffler of Example 1 of the present application.
[0020] Figure 5 This is a schematic diagram of the minimum flow rate state of the muffler in Example 1 of the present application.
[0021] Figure 6 This is a schematic diagram of the structure of the limiting component of the muffler of Example 2 of the present application.
[0022] Among them, 11. Installation channel; 12. Top plate; 121. Hanging rail; 13. Bottom plate; 131. Guide rail; 14. Side plate; 15. Outer plate; 16. First sound absorbing material; 17. First face shield hole panel; 2. Fixed silencer unit; 21. Hanging wheel; 22. Second face shield hole panel; 23. Second sound absorbing material; 3. Movable silencer unit; 31. Guide wheel; 4. Limiting assembly; 41. Movable plug-in block; 42. Positioning block; 43. Linking rod; 5. Connecting rod. DETAILED DESCRIPTION
[0023] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0024] Example 1
[0025] The present application discloses a muffler with adjustable sound reduction. Figure 1 and Figure 2 , including a shell, the shell is composed of a top plate 12, a bottom plate 13 and two parallel side plates 14 forming a "mouth"-shaped frame running through the middle, and the chamber inside the shell is the installation channel 11. The top plate 12, the bottom plate 13 and the side plates 14 are all composed of an outer plate 15, a first sound absorbing material 16 and a first face shield face plate 17 arranged in sequence. When the shell is assembled, the outer plate 15 faces outward, and the first face shield face plate 17 faces the installation channel 11.
[0026] A silencer unit assembly is installed in the installation channel 11, and the silencer unit assembly includes multiple fixed silencer units 2 and multiple movable silencer units 3. The fixed silencer units 2 and the movable silencer units 3 are parallel to the side panels 14, and are arranged in parallel and spaced apart between the two side panels 14. The fixed silencer units 2 and the movable silencer units 3 are arranged alternately. The fixed silencer units 2 and the movable silencer units 3 are installed in the installation channel 11 by axial sliding along the installation channel 11. The length of the fixed silencer units 2 and the movable silencer units 3 along the sliding direction of the movable silencer units 3 should be less than the length of the outer shell, so that the movable silencer units 3 can slide in the outer shell to completely overlap or stagger.
[0027] The movable muffler unit 3 and the fixed muffler unit 2 both adopt the same structure, and are both composed of a second face shield face plate 22, a frame, and a second sound absorbing material 23. Both side panels of the fixed muffler unit 2 and the movable muffler unit 3 are second face shield face plates 22. The frame is disposed between the second face shield face plates 22 on both sides and supports the second face shield face plates 22 on both sides. The second sound absorbing material 23 is filled between the two second face shield face plates 22. Both the first sound absorbing material 16 and the second sound absorbing material 23 can be made of materials such as sound absorbing sponge.
[0028] A limit assembly 4 for limiting the sliding movement of the active unit is provided in the housing. In the embodiment of the present application, the limit assembly 4 can be a sliding latch. A plurality of pin holes (not shown in the figure) are provided at intervals along the sliding direction of the active muffler unit 3 on the bottom wall of the top plate 12 or on the top plate 12 of the bottom plate 13. Each active muffler unit 3 has a corresponding row of pin holes. The sliding latch is fixed on the active muffler unit 3. The sliding pin portion of the sliding latch is in an "L" shape. The sliding pin seat of the sliding latch is fixed on the active muffler unit 3. The sliding pin portion is slidably connected to the sliding pin seat and has two limit points. By moving the sliding pin portion and inserting it into any pin hole, the active muffler unit 3 can be limited and fixed.
[0029] Reference Figure 3 , Figure 4 and Figure 5 By sliding the active silencer unit 3 and positioning the active silencer unit 3 at different positions in the installation channel 11, the arrangement of the silencer units of the silencer unit assembly in the installation channel 11 can be changed, thereby adjusting the silencer volume and resistance loss of the silencer. During the day, the active silencer unit 3 is moved to intersect with the fixed silencer unit 2, thereby increasing the flow rate in the installation channel 11, reducing the silencer volume, and reducing the resistance loss of the airflow passing through the silencer, thereby reducing energy consumption. At night, the active silencer unit 3 is moved to overlap with the fixed silencer unit 2, thereby reducing the flow rate in the installation channel 11 and increasing the silencer volume. The operator can appropriately adjust the position of the active silencer unit 3 between day and night to meet the energy saving requirements under the premise of noise reduction.
[0030] Furthermore, a connecting rod 5 is provided on the same side of the multiple active silencer units 3, and the connecting rod 5 is fixedly connected to the multiple active silencer units 3. The operator can simultaneously drive the multiple active silencer units 3 to move by pushing and pulling the connecting rod 5, thereby improving the adjustment efficiency of the active silencer units 3.
[0031] In the embodiment of the present application, a hanging rail 121 is provided on the bottom wall of the top plate 12 along the sliding direction of the active muffler unit 3, a plurality of first connecting members extending into the hanging rail 121 are fixedly provided on the top of the active muffler unit 3, hanging wheels 21 are rotatably provided on both sides of the first connecting members, the rotation axis of the hanging wheel 21 is perpendicular to the plate surface of the active muffler unit 3, and the hanging wheel 21 is rollingly connected in the hanging rail 121. By providing the hanging wheel 21, the active muffler unit 3 can move smoothly when sliding relative to the outer shell.
[0032] Furthermore, a guide track 131 is provided on the top wall of the bottom plate 13, and a plurality of second connecting members extending into the guide track 131 are fixedly provided at the bottom of the movable muffler unit 3, and a guide wheel 31 is rotatably provided on the second connecting member, and the rotation axis of the guide wheel 31 is vertically provided, and the guide wheel 31 is in rolling contact with the inner side wall of the guide track 131. The guide wheel 31 can limit the lower edge of the movable muffler unit 3 to prevent the lower part of the movable muffler unit 3 from shaking, and during the sliding process of the movable muffler unit 3, the guide wheel 31 is in relative rolling contact with the guide track 131, further reducing the moving resistance of the movable muffler unit 3.
[0033] Example 2
[0034] Reference Figure 6 The difference between Example 2 and Example 1 is that the limiting component 4 is different.
[0035] In the embodiment of the present application, the limit assembly 4 includes a movable plug block 41 slidably arranged on one side of the movable muffler unit 3 in the thickness direction of the movable muffler unit 3, a plurality of positioning blocks 42 are fixedly arranged at intervals on the bottom wall of the top plate 12 along the sliding direction of the movable muffler unit 3, a positioning groove adapted to the positioning block 42 is provided on the movable plug block 41, and magnetic parts for mutual magnetic attraction are provided on the side wall of the positioning block 42 and the inner side wall of the positioning groove, and the magnetic parts can be magnets. A connecting rod 43 is also included, and the connecting rod 43 is fixedly connected to the movable plug block 41 on each piece of the movable muffler unit 3 at the same time.
[0036] The operator can simultaneously move the movable plugs 41 on the multiple movable muffler units 3 by moving the linkage rod 43. When the movable plugs 41 move to the positioning grooves on them and are plugged with the positioning blocks 42 on the housing, the relative movement of the movable muffler units 3 can be restricted. The magnetic parts on the side walls of the positioning blocks 42 and the inner side walls of the positioning grooves are attracted to each other, which can improve the stability of the movable muffler units 3 in the positioning state, and make the positioning operation of the movable muffler units 3 more convenient.
[0037] It should be understood by those skilled in the art that, although preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention. Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.
Claims
1. A muffler with adjustable sound attenuation, characterized in that: The invention comprises a shell, wherein a mounting channel (11) is provided in the shell and passes through two ends of the shell, wherein a silencer unit assembly is built in the mounting channel (11), wherein the silencer unit assembly comprises a plurality of fixed silencer units (2) and a plurality of movable silencer units (3), wherein the fixed silencer units (2) and the movable silencer units (3) are staggered and arranged in parallel and at intervals, wherein the movable silencer unit (3) is slidably arranged in the shell along a direction parallel to its own plate surface and perpendicular to the length of the movable silencer unit (3), wherein a limiter assembly (4) for limiting the sliding of the movable unit is provided in the shell, wherein along the sliding direction of the movable silencer unit (3), the length of the movable silencer unit (3) and the length of the fixed silencer unit (2) are both less than the length of the shell.
2. A muffler with adjustable sound attenuation according to claim 1, characterized in that: A connecting rod (5) is provided on the same side of the plurality of movable silencer units (3), and the connecting rod (5) is fixedly connected to the plurality of movable silencer units (3) at the same time.
3. A muffler with adjustable sound attenuation according to claim 1, characterized in that: The housing is composed of a top plate (12), a bottom plate (13) and two side plates (14) parallel to the muffler unit; the top plate (12), the bottom plate (13) and the two side plates (14) are all structures of an outer plate (15), a first sound absorbing material (16) and a first face shield plate (17) which are arranged in sequence; the outer plate (15) is located on a side away from the installation channel (11), and the face shield plate is located on a side facing the installation channel (11).
4. A muffler with adjustable sound attenuation according to claim 3, characterized in that: A hanging rail (121) is provided on the bottom wall of the top plate (12) along the sliding direction of the movable muffler unit (3); a plurality of first connecting members extending into the hanging rail (121) are fixedly provided on the top of the movable muffler unit (3); hanging wheels (21) are rotatably provided on both sides of the first connecting members; the rotation axis of the hanging wheels (21) is perpendicular to the plate surface of the movable muffler unit (3); and the hanging wheels (21) are rollingly connected in the hanging rail (121); A guide track (131) is arranged on the top wall of the base plate (13); a plurality of second connecting members extending into the guide track (131) are fixedly arranged at the bottom of the movable silencer unit (3); a guide wheel (31) is rotatably arranged on the second connecting member; the rotation axis of the guide wheel (31) is arranged vertically; and the guide wheel (31) is in rolling contact with the inner wall of the guide track (131).
5. A muffler with adjustable sound attenuation according to claim 1, characterized in that: The fixed sound-absorbing unit (2) and the movable sound-absorbing unit (3) are both composed of a second face shield face plate (22), a frame, and a second sound-absorbing material (23); both side panels of the fixed sound-absorbing unit (2) and the movable sound-absorbing unit (3) are second face shield face plates (22); the frame is arranged between the second face shield face plates (22) on both sides and supports the second face shield face plates (22) on both sides; and the second sound-absorbing material (23) is filled between the two second face shield face plates (22).
6. A muffler with adjustable sound attenuation according to claim 3, characterized in that: The limiting assembly (4) comprises a sliding latch, and a plurality of pin holes are provided on the bottom wall of the top plate (12) at intervals along the sliding direction of the movable muffler unit (3), and the movement of the movable muffler unit (3) is limited by the latch being plugged into and fitted into the pin holes.
7. A muffler with adjustable sound attenuation according to claim 3, characterized in that: The limiting assembly (4) comprises a movable plug-in block (41) slidably arranged on one side of the movable silencer unit (3) along the thickness direction of the movable silencer unit (3); a plurality of positioning blocks (42) are fixedly arranged at intervals on the bottom wall of the top plate (12) along the sliding direction of the movable silencer unit (3); a positioning groove adapted to the positioning block (42) is provided on the movable plug-in block (41); magnetic parts for mutual magnetic attraction are provided on the side wall of the positioning block (42) and the inner side wall of the positioning groove; and a connecting rod (43) is also included, and the connecting rod (43) is fixedly connected to the movable plug-in block (41) on each piece of the movable silencer unit (3).