A multi-stage sound attenuation device for a suction dryer

Abstract

The utility model relates to a kind of multistage muffler for suction dryer, it is related to suction dryer muffling technical field, it includes reinforcing silencer, the reinforcing silencer both ends are evenly set primary muffler, the primary muffler is connected with the corrugated pipe of one end of reinforcing silencer, the corrugated pipe is fixedly set guide ring towards the one end of reinforcing silencer, the guide ring is communicated with corrugated pipe, the guide ring is coaxially arranged with reinforcing silencer, several guide holes are set in the guide ring, guide rod is inserted in the guide hole, the outer wall of guide rod and the inner wall of guide hole are mutually attached, the guide rod is slidably connected with guide ring, the guide rod is fixedly connected with the end wall of reinforcing silencer one end close to reinforcing silencer, drive assembly is arranged between the guide ring and reinforcing silencer, and the drive assembly is used to drive guide ring to move along guide rod. The present application has the effect of facilitating the sound absorption of suction dryer.

Description

Technical Field

[0001] This utility model relates to the field of desiccant silencing technology, and in particular to a multi-stage silencing device for desiccant dryers. Background Technology

[0002] During the alternating regeneration process of the adsorption tower and regeneration tower of the desiccant dryer, continuous exhaust is required, which results in significant exhaust noise during the operation of the desiccant dryer. Therefore, silencers are installed at the pressure relief exhaust pipe ends of the adsorption tower and regeneration tower to reduce noise.

[0003] The related technology includes a Chinese patent with authorization announcement number CN222479826U, which provides a silencer for a zero-air-consumption variable frequency blower heat absorption dryer. It includes a set of silencers connected to the outlet ends of the pressure relief exhaust pipes of the corresponding adsorption tower and regeneration tower. The outlet ends of the set of silencers are arranged opposite each other. A long elastic metal bellows is installed on one side of the outlet end of the silencer. An iron connector with a guide hole in the middle is installed on the end of the elastic metal bellows that is not connected to the silencer. A reinforcing silencer is fixedly installed between the elastic metal bellows. The two ends of the reinforcing silencer are respectively fixedly connected to corresponding electromagnets. When the electromagnets are energized, the iron connector is attracted, and the elastic metal bellows are connected to one end of the reinforcing silencer. During use, the electromagnet corresponding to the muffler in the exhaust state is energized to attract the corresponding iron connecting ring, thereby connecting the corresponding elastic metal bellows to one end of the reinforced muffler. This allows the two mufflers to be connected to the reinforced muffler as needed, so that the two mufflers can work together to achieve a noise reduction effect with the intervention of one reinforced muffler.

[0004] In the process of developing this application, the inventors discovered that the technology has at least the following problems: During the installation of the muffler and the reinforced muffler, since the elastic metal bellows between the muffler and the reinforced muffler can be bent and deformed, the muffler and the reinforced muffler are prone to being arranged non-coaxially. When the electromagnet is energized and attracts the corresponding iron connecting parts, the elastic metal bellows and the reinforced muffler are prone to misalignment and connection, resulting in air leakage, which affects the muffler effect of the desiccant dryer. Utility Model Content

[0005] To facilitate noise reduction in desiccant dryers, this application provides a multi-stage noise reduction device for desiccant dryers.

[0006] The multi-stage silencer for a desiccant dryer provided in this application adopts the following technical solution: A multi-stage silencing device for a desiccant dryer includes a reinforcing silencer, with primary silencers at both ends of the reinforcing silencer. A corrugated pipe is connected to the end of the primary silencer facing the reinforcing silencer. A guide ring is fixedly installed at the end of the corrugated pipe facing the reinforcing silencer. The guide ring is connected to the corrugated pipe and is coaxially arranged with the reinforcing silencer. Several guide holes are formed through the guide ring, and guide rods are inserted into the guide holes. The outer wall of the guide rod is in contact with the inner wall of the guide hole. The guide rod is slidably connected to the guide ring. The end of the guide rod near the reinforcing silencer is fixedly connected to the end wall of the reinforcing silencer. A driving assembly is provided between the guide ring and the reinforcing silencer. The driving assembly is used to drive the guide ring to move along the guide rod.

[0007] By adopting the above technical solution, one primary silencer is connected to one tower body, and another primary silencer is connected to another tower body. When either tower body is in the exhaust state, the drive component corresponding to that tower body causes the guide ring to move closer to the reinforcing silencer along the guide rod, thereby connecting the bellows corresponding to that tower body to one end of the reinforcing silencer. This allows the primary silencer and the reinforcing silencer to be connected in series to achieve a noise reduction effect. During the expansion and contraction of the bellows, the guide ring on the bellows moves along the guide rod, so that the end of the bellows away from the primary silencer is coaxially set with the reinforcing silencer. This reduces the possibility of air leakage caused by misalignment between the bellows and the reinforcing silencer, thus facilitating the noise reduction of the desiccant dryer.

[0008] Preferably, the end of the guide rod away from the reinforced muffler is fixedly provided with an end head, the diameter of which is larger than the diameter of the guide rod, and the end of which faces the reinforced muffler is used to abut against the end of the guide ring away from the reinforced muffler.

[0009] By adopting the above technical solution, the end-capped guide ring is restricted from moving out of the guide rod, reducing the possibility of the guide ring slipping off the guide rod.

[0010] Preferably, the drive assembly includes an electromagnet and an iron connecting ring. The electromagnet is disposed on the end wall of the reinforced muffler, and the iron connecting ring is disposed at the end of the guide ring away from the bellows. The iron connecting ring and the guide ring are coaxially arranged, and a sealing ring gasket is disposed at the end of the iron connecting ring away from the guide ring.

[0011] By adopting the above technical solution, when the electromagnet is energized, the electromagnet attracts the iron connecting ring that is positioned opposite it, thereby causing the iron connecting ring to drive the guide ring to move along the guide rod, so as to achieve the effect of connecting the bellows to one end of the enhanced silencer.

[0012] Preferably, the reinforced muffler includes a reinforced muffler shell, a sound-absorbing cotton layer, and a set of reinforced vent pipes. The guide rod is fixedly connected to the reinforced muffler shell on its opposite side. One of the reinforced vent pipes passes through one end of the reinforced muffler shell, and the other reinforced vent pipe passes through the other end of the reinforced muffler shell. The reinforced vent pipes and the reinforced muffler shell are interconnected. One electromagnet is disposed at the end of one of the reinforced vent pipes away from the reinforced muffler shell, and the other electromagnet is disposed at the end of the other reinforced vent pipe away from the reinforced muffler shell. A set of intermediate perforated plates is fixedly disposed inside the reinforced muffler shell. Several intermediate air holes are opened through the intermediate perforated plates, and the sound-absorbing cotton layer is disposed between the intermediate perforated plates.

[0013] By adopting the above technical solution, when gas enters the reinforced soundproof shell from one of the reinforced vent pipes, the gas is absorbed and silenced by the sound-absorbing cotton layer, and then discharged from the reinforced soundproof shell from the other reinforced vent pipe.

[0014] Preferably, the primary silencer includes a primary silencer shell and an inner cylinder. The primary silencer shell has an air inlet at the end away from the bellows and an air outlet at the end near the bellows. The air outlet is connected to the bellows. The inner cylinder is fixedly installed inside the primary silencer shell. One end of the inner cylinder is connected to the air inlet. An inner end plate is fixedly installed at the other end of the inner cylinder. Several through holes are opened on the side wall of the inner cylinder.

[0015] By adopting the above technical solution, when the gas enters the primary silencer shell from the air inlet, the gas is blocked by the inner end plate and discharged from the inner cylinder through the inner through hole. The gas discharged from the inner cylinder is then discharged from the primary silencer shell through the air outlet, thereby extending the flow path of the gas in the primary silencer shell and silencing by consuming gas energy.

[0016] Preferably, the primary muffler further includes an outer cylinder, which is fixedly disposed inside the primary muffler shell and sleeved on the inner cylinder. One end of the outer cylinder is in contact with the inner wall of the primary muffler shell, and an outer end plate is fixedly disposed at the other end of the outer cylinder. Several external through holes are opened on the side wall of the outer cylinder, and all external through holes are located on the side of the inner through holes away from the inner end plate.

[0017] By adopting the above technical solution, the gas discharged from the inner cylinder enters the outer cylinder. The gas in the outer cylinder is blocked by the outer end plate and discharged from the outer cylinder through the outer through hole. The gas discharged from the outer cylinder is then discharged from the primary silencer shell through the air outlet, thereby extending the flow path of the gas in the primary silencer shell and achieving noise reduction by consuming gas energy.

[0018] Preferably, a connecting ring plate is sleeved on the inner end plate, and both the inner end plate and the outer cylinder are fixedly connected to the connecting ring plate. Several connecting holes are opened through the connecting ring plate, and a damping layer is fixedly provided between the connecting ring plate and the outer ring plate.

[0019] By adopting the above technical solution, when gas impacts the damping layer, noise is eliminated by consuming the gas energy through the collision.

[0020] Preferably, a plurality of inner ring plates are fixedly provided on the side wall of the outer cylinder, and an outer ring plate is provided between adjacent inner ring plates. The outer ring plate is fixedly connected to the inner wall of the primary sound-absorbing shell, and an airflow channel is formed between the inner ring plate and the outer ring plate. A sound-absorbing cotton layer is provided on both the inner ring plate and the outer ring plate. The inner ring plate, the outer ring plate and the sound-absorbing cotton layer are all located on the side of the external through hole away from the air inlet.

[0021] By adopting the above technical solution, the gas discharged from the outer cylinder moves towards the outlet along the airflow channel. The gas is blocked by staggered sound-absorbing cotton layers, which absorb the generated sound.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting up a reinforced silencer, a primary silencer, a bellows, a guide ring, a guide hole, and a drive assembly, the drive assembly is used to drive the guide ring to move along the guide rod. During the extension and retraction of the bellows, the guide ring on the bellows moves along the guide rod, so that the end of the bellows away from the primary silencer is coaxially set with the reinforced silencer, reducing the possibility of air leakage caused by misalignment between the bellows and the reinforced silencer, and achieving the effect of facilitating the silencing of the desiccant dryer; 2. By setting the end cap, the possibility of the guide ring slipping off the guide rod is reduced; 3. By setting up an electromagnet, an iron connecting ring, and a sealing ring gasket, the guide ring moves along the guide rod. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a multi-stage noise reduction device for a desiccant dryer according to an embodiment of this application.

[0024] Figure 2 This is a cross-sectional view of the connection between the enhanced muffler and the primary muffler in an embodiment of this application.

[0025] Figure 3 yes Figure 2 Enlarged view of part A in the middle.

[0026] Figure 4 This is a cross-sectional view showing the positional relationship between the sound-absorbing shell and the sound-absorbing cotton layer in an embodiment of this application.

[0027] Figure 5 This is a cross-sectional view showing the positional relationship between the inner and outer cylinders in an embodiment of this application.

[0028] Figure 6 yes Figure 5 Enlarged view of section B.

[0029] Explanation of reference numerals in the attached drawings: 1. Reinforced silencer; 11. Reinforced silencer shell; 12. Sound-absorbing cotton layer; 121. Intermediate perforated plate; 122. Intermediate air hole; 13. Reinforced vent pipe; 2. Primary silencer; 21. Primary silencer shell; 211. Air inlet; 212. Air outlet; 22. Inner cylinder; 221. Inner through hole; 222. Inner end plate; 23. Outer cylinder; 231. Outer through hole; 232. Outer end plate; 3. Bellows; 4. Guide ring; 41. Guide hole; 42. Guide rod; 43. End; 5. Drive assembly; 51. Electromagnet; 52. Iron connecting ring; 53. Sealing ring gasket; 6. Airflow channel; 61. Inner ring plate; 62. Outer ring plate; 63. Sound-absorbing cotton layer; 7. Damping layer; 71. Connecting ring plate; 72. Connecting hole. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0031] This application discloses a multi-stage noise reduction device for a desiccant dryer. (Refer to...) Figures 1 to 3 The system includes a reinforced silencer 1, with primary silencers 2 at both ends. One primary silencer 2 connects to one tower body, and the other connects to another tower body. A bellows 3 is connected to the end of the primary silencer 2 facing the reinforced silencer 1. A guide ring 4 is coaxially mounted on the end of the bellows 3 facing the reinforced silencer 1, and the guide ring 4 is connected to the bellows 3. Several guide holes 41 are formed through the guide ring 4, and guide rods 42 are inserted into the guide holes 41. The outer wall of the guide rod 42 fits against the inner wall of the guide hole 41, and the guide rod 42 is slidably connected to the guide ring 4. The end of the guide rod 42 near the reinforced silencer 1 is welded to the end wall of the reinforced silencer 1, and the guide ring 4 is coaxially arranged with the reinforced silencer 1. A drive assembly 5 is installed between the guide ring 4 and the reinforced silencer 1, and the drive assembly 5 is used to drive the guide ring 4 to move along the guide rods 42. When any tower body is in the exhaust state, the corresponding drive assembly 5 moves the guide ring 4 along the guide rod 42 toward the reinforced silencer 1, thereby connecting the bellows 3 corresponding to this tower body to one end of the reinforced silencer 1. This connects the primary silencer 2 and the reinforced silencer 1 in series to achieve a noise reduction effect. During the extension and retraction of the bellows 3, the guide ring 4 on the bellows 3 moves along the guide rod 42, causing the end of the bellows 3 away from the primary silencer 2 to be coaxially aligned with the reinforced silencer 1. This reduces the possibility of air leakage due to misalignment between the bellows 3 and the reinforced silencer 1, thus facilitating the noise reduction of the desiccant dryer.

[0032] Reference Figures 1 to 3An end cap 43 is installed on the end of the guide rod 42 away from the reinforced muffler 1. The diameter of the end cap 43 is larger than the diameter of the guide rod 42 and the diameter of the guide hole 41. The end cap 43 facing the reinforced muffler 1 is used to abut against the end of the guide ring 4 away from the reinforced muffler 1. The end cap 43 restricts the guide ring 4 from moving out of the guide rod 42, reducing the possibility of the guide ring 4 slipping off the guide rod 42.

[0033] Reference Figures 1 to 3 The drive assembly 5 includes an electromagnet 51 and an iron connecting ring 52. The electromagnet 51 is mounted on the end wall of the reinforced muffler 1 facing the guide ring 4, and the iron connecting ring 52 is mounted on the end wall of the guide ring 4 away from the bellows 3. The iron connecting ring 52 and the guide ring 4 are coaxially arranged. When the electromagnet 51 is energized, it attracts the iron connecting ring 52, which in turn moves the guide ring 4 along the guide rod 42, thus connecting the bellows 3 to one end of the reinforced muffler 1. A rubber sealing gasket 53 is installed on the end of the iron connecting ring 52 away from the guide ring 4. After the electromagnet 51 and the iron connecting ring 52 are electromagnetically attracted and connected, the sealing gasket 53 improves the sealing tightness of the connection between the electromagnet 51 and the iron connecting ring 52.

[0034] Refer to 1 to Figure 4 The reinforced muffler 1 includes a reinforced muffler shell 11, a sound-absorbing cotton layer 12, and a set of reinforced vent pipes 13. The guide rod 42 is welded to the reinforced muffler shell 11 on its opposite side, and the reinforced vent pipes 13 are all fixedly installed on the reinforced muffler shell 11. One reinforced vent pipe 13 passes through one end of the reinforced muffler shell 11, and the other reinforced vent pipe 13 passes through the other end of the reinforced muffler shell 11, with the reinforced vent pipes 13 and the reinforced muffler shell 11 interconnected. One electromagnet 51 is installed at the end of one reinforced vent pipe 13 away from the reinforced muffler shell 11, and the other electromagnet 51 is installed at the end of the other reinforced vent pipe 13 away from the reinforced muffler shell 11. A set of intermediate perforated plates 121 is installed inside the reinforced muffler shell 11, with several intermediate air holes 122 penetrating through the intermediate perforated plates 121. The sound-absorbing cotton layer 12 is installed between the intermediate perforated plates 121, and the sound-absorbing cotton layer 12 is composed of sound-absorbing cotton made of polyester fiber or the like through a hot-pressing process. When gas enters the reinforced silencing shell 11 through one of the reinforced vent pipes 13, the gas is absorbed and silenced by the sound-absorbing cotton layer 12, and then discharged from the reinforced silencing shell 11 through the other reinforced vent pipe 13.

[0035] Reference Figures 1 to 5The primary silencer 2 includes a primary silencer housing 21, an inner cylinder 22, and an outer cylinder 23. The primary silencer housing 21 has an air inlet 211 at the end furthest from the bellows 3 and an air outlet 212 at the end closest to the bellows 3, with the air outlet 212 communicating with the bellows 3. Both the inner cylinder 22 and the outer cylinder 23 are installed inside the primary silencer housing 21, with the outer cylinder 23 fitted onto the inner cylinder 22. One end of the inner cylinder 22 communicates with the air inlet 211, and an inner end plate 222 is installed at the other end of the inner cylinder 22. Several internal through holes 221 are formed on the side wall of the inner cylinder 22. One end of the outer cylinder 23 is fitted against the inner wall of the primary silencer housing 21, and an outer end plate 232 is installed at the other end of the outer cylinder 23. Several external through holes 231 are formed on the side wall of the outer cylinder 23. A connecting ring plate 71 is fitted onto the inner end plate 222, and both the inner end plate 222 and the outer cylinder 23 are fixedly connected to the connecting ring plate 71. Several connecting holes 72 are formed through the connecting ring plate 71. A rubber damping layer 7 is installed between the connecting ring plate 71 and the outer ring plate 62. When gas impacts the damping layer 7, noise is absorbed by consuming gas energy through the collision. Several inner ring plates 61 are installed on the side wall of the outer cylinder 23, and an outer ring plate 62 is positioned between adjacent inner ring plates 61. The outer ring plates 62 are installed on the inner wall of the primary sound-absorbing shell 21, forming an airflow channel 6 between the inner ring plates 61 and the outer ring plates 62. Both the inner ring plates 61 and the outer ring plates 62 are wrapped with a sound-absorbing cotton layer 63, which is made of sound-absorbing cotton produced by hot pressing processes such as polyester fiber. All external through holes 231 are located on the side of the internal through hole 221 away from the inner end plate 222. The inner ring plate 61, outer ring plate 62, and sound-absorbing cotton layer 63 are all located on the side of the external through hole 231 away from the air inlet 211. When gas enters the primary sound-absorbing shell 21 from the air inlet 211, the gas is blocked by the inner end plate 222 and exits from the inner cylinder 22 through the internal through hole 221. The gas exiting the inner cylinder 22 enters the outer cylinder 23, and the gas in the outer cylinder 23 is blocked by the outer end plate 232 and exits from the outer cylinder 23 through the external through hole 231. The gas exiting the outer cylinder 23 moves along the airflow channel 6 towards the air outlet 212. This prolongs the flow path of the gas in the primary sound-absorbing shell 21, and the gas is silenced by consuming gas energy. At the same time, the gas is blocked by the staggered sound-absorbing cotton layers 63, which absorb the generated sound.

[0036] The implementation principle of a multi-stage silencing device for a desiccant dryer according to an embodiment of this application is as follows: When any tower is in the exhaust state, the electromagnet 51 corresponding to this tower is energized, causing the guide ring 4 to move along the guide rod 42 towards the reinforcing silencer 1, thereby connecting the corrugated pipe 3 corresponding to this tower to one end of the reinforcing silencer 1, so that the primary silencer 2 corresponding to this tower and the reinforcing silencer 1 are connected in series to achieve a silencing effect. During the extension and retraction of the corrugated pipe 3, the guide ring 4 on the corrugated pipe 3 moves along the guide rod 42, so that the end of the corrugated pipe 3 away from the primary silencer 2 is coaxially arranged with the reinforcing silencer 1, reducing the possibility of air leakage caused by misalignment between the corrugated pipe 3 and the reinforcing silencer 1, and achieving a convenient silencing effect for the desiccant dryer.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A multi-stage silencing device for a desiccant dryer, comprising a reinforcing silencer, wherein primary silencers are provided at both ends of the reinforcing silencer, and a corrugated pipe is connected to the end of the primary silencer facing the reinforcing silencer, characterized in that: A guide ring is fixedly installed at the end of the bellows facing the reinforced muffler. The guide ring is connected to the bellows and is coaxially arranged with the reinforced muffler. Several guide holes are opened through the guide ring, and guide rods are inserted into the guide holes. The outer wall of the guide rod is in contact with the inner wall of the guide hole. The guide rod is slidably connected to the guide ring. The end of the guide rod near the reinforced muffler is fixedly connected to the end wall of the reinforced muffler. A driving assembly is provided between the guide ring and the reinforced muffler. The driving assembly is used to drive the guide ring to move along the guide rod.

2. The multi-stage noise reduction device for a desiccant dryer according to claim 1, characterized in that: The guide rod is fixedly provided with an end head at the end away from the reinforced muffler. The diameter of the end head is larger than the diameter of the guide rod. The end head facing the reinforced muffler is used to abut against the end of the guide ring away from the reinforced muffler.

3. The multi-stage noise reduction device for a desiccant dryer according to claim 1, characterized in that: The drive assembly includes an electromagnet and an iron connecting ring. The electromagnet is disposed on the end wall of the reinforced muffler, and the iron connecting ring is disposed at the end of the guide ring away from the bellows. The iron connecting ring and the guide ring are coaxially arranged, and a sealing ring gasket is disposed at the end of the iron connecting ring away from the guide ring.

4. A multi-stage noise reduction device for a desiccant dryer according to claim 3, characterized in that: The enhanced muffler includes an enhanced muffler shell, a sound-absorbing cotton layer, and a set of enhanced vent pipes. The guide rod is fixedly connected to the enhanced muffler shell on its opposite side. One of the enhanced vent pipes passes through one end of the enhanced muffler shell, and the other enhanced vent pipe passes through the other end of the enhanced muffler shell. The enhanced vent pipes and the enhanced muffler shell are interconnected. One electromagnet is installed at the end of one of the enhanced vent pipes away from the enhanced muffler shell, and the other electromagnet is installed at the end of the other enhanced vent pipe away from the enhanced muffler shell. A set of intermediate perforated plates is fixedly installed inside the enhanced muffler shell. Several intermediate air holes are opened through the intermediate perforated plates, and the sound-absorbing cotton layer is disposed between the intermediate perforated plates.

5. A multi-stage noise reduction device for a desiccant dryer according to claim 1, characterized in that: The primary silencer includes a primary silencer shell and an inner cylinder. The primary silencer shell has an air inlet at the end away from the bellows and an air outlet at the end near the bellows. The air outlet is connected to the bellows. The inner cylinder is fixedly installed inside the primary silencer shell. One end of the inner cylinder is connected to the air inlet. An inner end plate is fixedly installed at the other end of the inner cylinder. Several through holes are opened on the side wall of the inner cylinder.

6. A multi-stage noise reduction device for a desiccant dryer according to claim 5, characterized in that: The primary muffler also includes an outer cylinder, which is fixedly installed inside the primary muffler shell. The outer cylinder is sleeved on the inner cylinder, with one end of the outer cylinder in contact with the inner wall of the primary muffler shell, and an outer end plate fixedly installed at the other end of the outer cylinder. Several external through holes are opened on the side wall of the outer cylinder, and all external through holes are located on the side of the inner through holes away from the inner end plate.

7. A multi-stage noise reduction device for a desiccant dryer according to claim 6, characterized in that: A connecting ring plate is fitted onto the inner end plate. Both the inner end plate and the outer cylinder are fixedly connected to the connecting ring plate. Several connecting holes are opened through the connecting ring plate. A damping layer is fixedly provided between the connecting ring plate and the outer ring plate.

8. A multi-stage noise reduction device for a desiccant dryer according to claim 6, characterized in that: Several inner ring plates are fixedly arranged on the side wall of the outer cylinder, and an outer ring plate is arranged between adjacent inner ring plates. The outer ring plate is fixedly connected to the inner wall of the primary sound-absorbing shell. An airflow channel is formed between the inner ring plate and the outer ring plate. A sound-absorbing cotton layer is provided on both the inner ring plate and the outer ring plate. The inner ring plate, the outer ring plate and the sound-absorbing cotton layer are all located on the side of the external through hole away from the air inlet.

Images