Ventilation pipe type silencer
By introducing filtering and sound-relieving mechanisms into the ventilation ducts, using primary filters, activated carbon filters and composite sound-absorbing boards, the harmful gas emission and noise problems in the ventilation ducts are solved, gas filtration and noise reduction are achieved, and the environment is protected and Human health.
Patent Information
- Application Number
- CN202420692814.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-07
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-04-07
AI Technical Summary
The existing ventilation duct lacks filtering devices in industrial production, resulting in the direct discharge of harmful gases into the atmosphere to pollute the environment, and a large amount of noise is generated during gas transmission that affects the working environment.
A ventilation duct type muffler is designed, including a filtering mechanism and a muffler mechanism. The filtering mechanism consists of a primary filter, an activated carbon filter, and a high-efficiency filter. The muffler mechanism consists of a sound-absorbing box and a composite sound-absorbing plate, and is filtered through the filtering mechanism. Hazardous gases, reduce noise through the sound silencer.
Effectively filter harmful gases, prevent them from being discharged into the atmosphere, reduce noise, improve sound absolution effect, and protect the environment and human health.
Smart Images
Figure CN222164059U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ventilation pipes, in particular to a ventilation pipe type muffler. Background Art
[0002] The ventilation duct silencer is based on the principle of resistive sound absorption and noise reduction, which has a good effect on the broadband characteristics of medium and high frequencies, and the principle of resistant sound reduction and noise reduction, which has a good effect on the low, medium frequency and pulsation characteristics, as well as micro-perforated silencers and impedance composite silencers. Pipeline silencer products are mainly used for the effective silencing of steam emissions from thermal equipment such as boilers and steam turbines in the power generation sector.
[0003] A silencer is a noise reduction device that can be used to reduce the noise in an airflow duct with noise transmission, such as pipes and elbows with sound-absorbing linings or pipes with sudden changes in cross-sectional area and other discontinuous acoustic impedance, so that the noise in the duct can be attenuated or reflected back. The former is called a resistive silencer, the latter is called a reactive silencer, and there are also impedance composite silencers. There are many types of silencers, but in terms of their silencer mechanism, they can be divided into six main types, namely resistive silencers, reactive silencers, impedance composite silencers, micro-perforated plate silencers, small hole silencers and active silencers. The following problems exist in the existing technology:
[0004] In the actual use of existing silencers, industrial production exhaust usually contains impurities and harmful gases, which pollute the environment, but the existing ventilation pipes lack corresponding filtering devices, so the harmful gases will be directly discharged into the atmosphere, thereby endangering people's health; at the same time, in industrial applications, a large amount of noise will be generated when the gas is transported through the ventilation pipes, affecting the working environment and having a certain impact on the human body in the long run. Utility Model Content
[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:
[0006] A ventilation pipe type silencer comprises an outer shell, connecting flanges are fixedly installed at both left and right ends of the outer shell, a filtering mechanism is installed inside the left end of the outer shell, fixing components are installed on the front and rear sides of the upper end of the filtering mechanism, a silencer mechanism is installed inside the right end of the outer shell, and reinforcing ribs are symmetrically fixedly installed on the opposite surfaces of the two groups of connecting flanges.
[0007] Preferably: the filtering mechanism includes a baffle, the lower end of the baffle is movably connected to the upper left end of the shell, a handle is fixedly installed in the middle of the upper end of the baffle, a fixed block is fixedly installed at the lower end of the baffle, three groups of docking grooves are equidistantly provided on the lower end surface of the fixed block, a primary filter is movably installed below the fixed block, an activated carbon filter is installed on the right side of the primary filter, a high-efficiency filter is installed on the right side of the activated carbon filter, and docking blocks are fixedly installed on the upper ends of the primary filter, the activated carbon filter and the high-efficiency filter.
[0008] Preferably, the docking groove and the docking block are both in a "T" shape, and the docking groove and the docking block are slidably connected.
[0009] Preferably: the fixing assembly includes a circular plate, the rear end of the circular plate is symmetrically fixedly connected to the front and rear ends of the left end of the shell, the front end of the circular plate is fixedly installed with a socket, the front end of the socket is movably installed with a bracket, the middle of the socket is rotatably connected with a rotating shaft, the top middle of the bracket is slidably connected with a sliding rod, the front end of the sliding rod is fixedly installed with a pull plate, the bottom end of the sliding rod is fixedly installed with a limiting plate, the rear end of the limiting plate is fixedly installed with a positioning column, the outer surface of the bottom end of the sliding rod is sleeved with a spring, and the upper four corners of the baffle are symmetrically provided with positioning holes.
[0010] Preferably: the outer surface of the rotating shaft is fixedly connected to the bottom end of the bracket, one end of the spring is fixedly connected to the top inner wall of the bracket, and the other end is fixedly connected to the front end of the limiting plate, and the positioning column matches the positioning hole and is movably connected.
[0011] Preferably, the sound-absorbing mechanism comprises two groups of sound-absorbing boxes, the outer walls of the sound-absorbing boxes are fixedly connected to the inner wall of the right end of the shell, a plurality of through holes are opened on the surface of the sound-absorbing boxes, a cavity is integrally formed inside the sound-absorbing boxes, and a composite sound-absorbing panel is fixedly installed inside the cavity.
[0012] Preferably, the composite sound-absorbing panel is made of perforated gypsum board as a base material and sound-absorbing rock wool adhered thereto.
[0013] Preferably, the lower end of the reinforcing rib is fixedly connected to the left and right outer walls of the shell, and a through opening is opened on the upper side of the left end of the shell, and the interior of the through opening matches the fixed block and is movably connected.
[0014] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:
[0015] 1. The utility model provides a ventilation pipe type silencer, which can filter harmful gases and impurities through the filtering mechanism, baffles, handles, fixing blocks, docking grooves, primary filter screens, activated carbon filter screens, high-efficiency filter screens, and docking blocks, thereby effectively preventing toxic gases contained in the gas from being discharged into the atmosphere and endangering people's health.
[0016] 2. The utility model provides a ventilation pipe type silencer, which uses a silencer mechanism, a sound absorbing box, a through hole, a cavity, and a composite sound absorbing board. When the gas passes through the sound absorbing box, the through hole reduces the flow rate of the gas flow and reduces the noise. At the same time, the composite sound absorbing board inside the sound absorbing box further absorbs and weakens the noise, thereby enhancing the silencer effect of the silencer. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a structural schematic diagram of the ventilation pipe type muffler of the utility model;
[0018] Figure 2 It is a structural schematic diagram of a cross-sectional view of a ventilation pipe type muffler of the utility model;
[0019] Figure 3 It is a structural schematic diagram of the filtering mechanism of the utility model;
[0020] Figure 4 It is a structural schematic diagram of the fixing assembly of the utility model;
[0021] Figure 5 It is a structural schematic diagram of the silencer mechanism of the utility model.
[0022] In the figure: 1. shell; 2. connecting flange; 3. filtering mechanism; 4. fixing assembly; 5. silencer mechanism; 6. reinforcing rib; 31. baffle; 32. handle; 33. fixing block; 34. docking groove; 35. primary filter; 36. activated carbon filter; 37. high efficiency filter; 38. docking block; 41. round plate; 42. holder; 43. bracket; 44. rotating shaft; 45. sliding rod; 46. pull plate; 47. limit plate; 48. positioning column; 49. spring; 410. positioning hole; 51. sound absorbing box; 52. through hole; 53. cavity; 54. composite sound absorbing panel. DETAILED DESCRIPTION
[0023] The present invention is further described in detail below in conjunction with the embodiments:
[0024] like Figure 1-5As shown, the utility model provides a ventilation pipe type silencer, including a shell 1, connecting flanges 2 are fixedly installed on both ends of the shell 1, a filtering mechanism 3 is installed inside the left end of the shell 1, and fixing components 4 are installed on the front and rear sides of the upper end of the filtering mechanism 3, a silencer mechanism 5 is installed inside the right end of the shell 1, and reinforcing ribs 6 are symmetrically fixedly installed on the opposite surfaces of the two sets of connecting flanges 2.
[0025] The lower end of the reinforcing rib 6 is fixedly connected to the left and right outer walls of the housing 1 . A through opening is provided on the upper left end of the housing 1 . The interior of the through opening matches the fixing block 33 and is movably connected.
[0026] Through the filtering mechanism 3, the harmful gases and impurities can be filtered through the primary filter 35, the activated carbon filter 36, and the high-efficiency filter 37, thereby effectively preventing the toxic gases contained in the gas from being discharged into the atmosphere and endangering people's health. Through the silencer mechanism 5, when the gas passes through the sound-absorbing box 51, the flow rate of the gas flow is reduced by the through hole 52 to reduce the noise. At the same time, the composite sound-absorbing board 54 inside the sound-absorbing box 51 further absorbs and reduces the noise, thereby enhancing the sound-absorbing effect of the silencer.
[0027] like Figure 3 As shown, the filtering mechanism 3 includes a baffle 31, the lower end of the baffle 31 is movably connected to the upper left end of the shell 1, a handle 32 is fixedly installed in the middle of the upper end of the baffle 31, a fixing block 33 is fixedly installed at the lower end of the baffle 31, and three groups of docking grooves 34 are equidistantly provided on the lower end surface of the fixing block 33, a primary filter 35 is movably installed below the fixing block 33, an activated carbon filter 36 is installed on the right side of the primary filter 35, a high-efficiency filter 37 is installed on the right side of the activated carbon filter 36, and a docking block 38 is fixedly installed on the upper ends of the primary filter 35, the activated carbon filter 36, and the high-efficiency filter 37.
[0028] The docking groove 34 and the docking block 38 are both in a “T” shape, and the docking groove 34 and the docking block 38 are slidably connected.
[0029] The docking block 38 is slidably connected to the docking groove 34, so that the three groups of different filter screens can be easily disassembled and replaced.
[0030] like Figure 4As shown, the fixing assembly 4 includes a circular plate 41, the rear end of the circular plate 41 is symmetrically fixedly connected to the front and rear ends of the left end of the shell 1, a holder 42 is fixedly installed at the front end of the circular plate 41, a bracket 43 is movably installed at the front end of the holder 42, a rotating shaft 44 is rotatably connected in the middle of the holder 42, a slide rod 45 is slidably connected in the middle of the top of the bracket 43, a pull plate 46 is fixedly installed at the front end of the slide rod 45, a limit plate 47 is fixedly installed at the bottom end of the slide rod 45, a positioning column 48 is fixedly installed at the rear end of the limit plate 47, a spring 49 is sleeved on the outer surface of the bottom end of the slide rod 45, and positioning holes 410 are symmetrically opened at the four corners of the upper end of the baffle 31.
[0031] The outer surface of the rotating shaft 44 is fixedly connected to the bottom end of the bracket 43, one end of the spring 49 is fixedly connected to the top inner wall of the bracket 43, and the other end is fixedly connected to the front end of the limit plate 47. The positioning column 48 matches the positioning hole 410 and is movably connected.
[0032] The bracket 42 and the rotating shaft 44 are provided to facilitate the swinging of the bracket 43, thereby avoiding blocking the baffle 31 and facilitating the upward movement of the baffle 31.
[0033] like Figure 5 As shown, the sound-absorbing mechanism 5 includes two groups of sound-absorbing boxes 51. The outer wall of the sound-absorbing box 51 is fixedly connected to the inner wall of the right end of the shell 1. A plurality of through holes 52 are opened on the surface of the sound-absorbing box 51. A cavity 53 is integrally formed inside the sound-absorbing box 51. A composite sound-absorbing panel 54 is fixedly installed inside the cavity 53.
[0034] The composite sound-absorbing board 54 is made of a perforated gypsum board as a base material and sound-absorbing rock wool adhered thereto.
[0035] The following is a detailed description of the working principle of the ventilation pipe muffler.
[0036] like Figure 1-5As shown, when the ventilation pipe type silencer is in use, the housing 1 is connected to the ventilation pipe through the connecting flange 2. When the gas in the ventilation pipe is discharged through the housing 1, it will be filtered by the primary filter 35, the activated carbon filter, and the high-efficiency filter 37 in turn, so that the impurities and harmful gases in the gas can be filtered, and then the toxic gas contained in the gas can be effectively prevented from being discharged into the atmosphere and endangering people's health. At the same time, when the gas in the housing 1 is discharged, the gas will enter the sound-absorbing box 51 after being filtered. The flow rate of the gas can be reduced by relying on the plurality of through holes 52, thereby reducing the noise. At the same time, the composite sound-absorbing board 54 is made of perforated gypsum board as the base material, processed and adhered with sound-absorbing rock wool, and has excellent properties such as sound insulation, heat insulation and fire prevention. It can absorb and reduce noise, enhance the silencing effect of the silencer, and thus improve the practicality of the device; after the primary filter 35, the high-efficiency filter and the activated carbon filter 36 have filtered the toxic gas for a long time, the primary filter 35, the high-efficiency filter and the activated carbon filter 36 will filter the toxic gas. A large amount of toxic substances and impurities will accumulate in the primary filter 37 and the activated carbon filter 36, so they need to be cleaned. The pull plate 46 can be pulled outward, so that the pull plate 46 drives the slide bar 45 to move outward, so that the slide bar 45 drives the limit plate 47 and the positioning column 48 outward at the same time, so that the spring 49 is compressed, and the positioning column 48 is separated from the positioning hole 410. Then the baffle 31 can be pulled upward by the handle 32, so that the baffle 31 and the fixed block 33 can pull out the primary filter 35, the activated carbon filter 36, and the high-efficiency filter 37 through the opening, so that they can be cleaned.
[0037] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.
Claims
1. A ventilation pipe type silencer, comprising a housing (1), wherein both left and right ends of the housing (1) are fixedly mounted with connecting flanges (2), characterized in that: A filter mechanism (3) is installed inside the left end of the shell (1), and fixing components (4) are installed on the front and rear sides of the upper end of the filter mechanism (3). A silencer mechanism (5) is installed inside the right end of the shell (1), and reinforcing ribs (6) are symmetrically fixedly installed on the opposite surfaces of the two groups of connecting flanges (2).
2. A ventilation pipe type muffler according to claim 1, characterized in that: The filtering mechanism (3) comprises a baffle (31), the lower end of the baffle (31) being movably connected to the upper left side of the housing (1), a handle (32) being fixedly mounted in the middle of the upper end of the baffle (31), a fixing block (33) being fixedly mounted at the lower end of the baffle (31), three groups of docking grooves (34) being equidistantly formed on the lower end surface of the fixing block (33), a primary filter (35) being movably mounted below the fixing block (33), an activated carbon filter (36) being mounted on the right side of the primary filter (35), a high-efficiency filter (37) being mounted on the right side of the activated carbon filter (36), and docking blocks (38) being fixedly mounted on the upper ends of the primary filter (35), the activated carbon filter (36) and the high-efficiency filter (37).
3. A ventilation pipe type muffler according to claim 2, characterized in that: The docking groove (34) and the docking block (38) are both in a "T" shape, and the docking groove (34) and the docking block (38) are slidably connected.
4. A ventilation pipe type muffler according to claim 2, characterized in that: The fixing assembly (4) comprises a circular plate (41), the rear end of the circular plate (41) is symmetrically fixedly connected to the front and rear ends of the left end of the housing (1), the front end of the circular plate (41) is fixedly mounted with a holder (42), the front end of the holder (42) is movably mounted with a bracket (43), the middle of the holder (42) is rotatably connected with a rotating shaft (44), the top middle of the bracket (43) is slidably connected with a slide rod (45), the front end of the slide rod (45) is fixedly mounted with a pull plate (46), the bottom end of the slide rod (45) is fixedly mounted with a limit plate (47), the rear end of the limit plate (47) is fixedly mounted with a positioning column (48), the outer surface of the bottom end of the slide rod (45) is sleeved with a spring (49), and positioning holes (410) are symmetrically provided at the four corners of the upper end of the baffle (31).
5. A ventilation pipe type muffler according to claim 4, characterized in that: The outer surface of the rotating shaft (44) is fixedly connected to the bottom end of the bracket (43), one end of the spring (49) is fixedly connected to the top inner wall of the bracket (43), and the other end is fixedly connected to the front end of the limiting plate (47), and the positioning column (48) matches the positioning hole (410) and is movably connected.
6. A ventilation pipe type muffler according to claim 1, characterized in that: The sound-absorbing mechanism (5) comprises two groups of sound-absorbing boxes (51), the outer walls of the sound-absorbing boxes (51) are fixedly connected to the inner wall of the right end of the outer shell (1), a plurality of through holes (52) are provided on the surface of the sound-absorbing boxes (51), a cavity (53) is integrally formed inside the sound-absorbing boxes (51), and a composite sound-absorbing panel (54) is fixedly installed inside the cavity (53).
7. A ventilation pipe type muffler according to claim 6, characterized in that: The composite sound-absorbing board (54) is made of a perforated gypsum board as a base material and sound-absorbing rock wool adhered thereto.
8. A ventilation pipe type muffler according to claim 1, characterized in that: The lower end of the reinforcing rib (6) is fixedly connected to the left and right outer walls of the outer shell (1), and a through opening is provided on the upper side of the left end of the outer shell (1), the interior of the through opening matches the fixed block (33) and is movably connected.