A sound attenuating device for a suction drier

Abstract

The utility model discloses a kind of sound attenuation device for suction dryer, including shell, air inlet pipe and exhaust tail pipe, shell both ends are open and hollowly set, air inlet pipe and exhaust tail pipe are respectively installed and set in the both ends of shell and respectively communicated with the both ends of shell, the inside of shell includes first chamber, second chamber, third chamber and fourth chamber communicated in turn from air inlet pipe to exhaust tail pipe, air inlet pipe is communicated with first chamber in one end of the inside of shell, hollow chamber plate of multiple groups of communication settings is arranged in second chamber, energy dissipation cavity is arranged between multiple groups of hollow chamber plate and shell, energy dissipation cavity is filled with damping particle, exhaust tail pipe is communicated with fourth chamber in one end of the inside of shell.The utility model can be through reflection, resonance, interference and gas and hole friction consumption noise energy in shell, then reach good sound attenuation effect by damping particle and sound-absorbing material layer.

Description

Technical Field

[0001] This utility model relates to the field of noise reduction equipment technology, and in particular to a noise reduction device for a desiccant dryer. Background Technology

[0002] A desiccant dryer, also known as a compressed air adsorption dryer, is an indispensable piece of equipment used in conjunction with a screw air compressor and a precision air filter to process compressed air sources.

[0003] The desiccant dryer requires continuous exhaust during operation, resulting in significant exhaust noise and considerable noise pollution. Current methods to address this pollution involve installing silencers directly at the exhaust pipe end. While silencers can reduce exhaust noise during heating and cooling regeneration to some extent, limited installation space restricts the size and number of silencers used, resulting in limited noise reduction and persistent, noticeable noise during actual operation. Utility Model Content

[0004] The purpose of this invention is to provide a noise reduction device for a desiccant dryer, which can consume noise energy through gas reflection, resonance, interference and gas-hole friction within the housing, and achieve a good noise reduction effect through damping particles and sound-absorbing material layers.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: A noise reduction device for a desiccant dryer, characterized in that it comprises a housing, an air inlet pipe, and an exhaust tailpipe. The housing is open at both ends and hollow. The air inlet pipe and the exhaust tailpipe are respectively installed at both ends of the housing and communicate with both ends of the housing. The interior of the housing includes a first chamber, a second chamber, a third chamber, and a fourth chamber that are sequentially connected from the air inlet pipe to the exhaust tailpipe. One end of the air inlet pipe is connected to the first chamber inside the housing. The second chamber is provided with multiple sets of hollow cavity plates that are connected to each other. An energy dissipation cavity is provided between the multiple sets of hollow cavity plates and the housing. The energy dissipation cavity is filled with damping particles. One end of the exhaust tailpipe is connected to the fourth chamber inside the housing.

[0006] Preferably, four sets of ribs are provided at both ends of the outer shell and at the connection points of the air intake pipe and the exhaust tailpipe, and the four sets of ribs are arranged in a ring array.

[0007] Preferably, the exhaust tailpipe and the intake pipe are closed at one end inside the housing. The side wall of the closed end of the exhaust tailpipe and the intake pipe is provided with multiple sets of vent holes. A connecting seat is also fixedly sleeved inside the first chamber on the outside of the intake pipe. The connecting seat has an H-shaped cross-section. Multiple sets of vent holes are provided between the two ends of the connecting seat and the connecting side wall of the first chamber. A gap is provided between the side wall of the connecting seat and the inner wall of the housing to connect the vent holes at both ends of the connecting seat.

[0008] Preferably, at least five sets of hollow cavity plates are provided, each set of hollow cavity plates is a hollow frustum shape, and the hollow cavity plates in each set are sequentially sealed and connected end to end.

[0009] Preferably, the inlet inner diameter of each set of hollow cavity plates is half the outlet inner diameter, and the inlet inner diameter of the first set of hollow cavity plates is smaller than the inner diameter of the tail of the connecting seat.

[0010] Preferably, the third chamber includes a perforated tube, an inner tube, and two sets of partitions perpendicular to the housing. The two sets of partitions are arranged parallel to each other and are sealed to the inside of the housing. At least four sets of inner tubes are arranged in a ring array. Each inner tube passes through two sets of partitions. The perforated tube is open at both ends. One end of the perforated tube communicates with the second chamber, and the other end of the perforated tube passes through one set of partitions and communicates with the space between the two sets of partitions. The side wall of one end of the perforated tube is provided with multiple sets of vent holes near the second chamber. The perforated tube communicates with the inner tube through the vent holes.

[0011] Preferably, multiple sets of flow guide seats are provided between the side wall of the connecting seat and the inner wall of the housing, and the multiple sets of flow guide seats are all hollow frustum-shaped.

[0012] Preferably, the fourth chamber is provided with two sets of perforated plates perpendicular to the housing direction, and a sound-absorbing material layer is sandwiched between the perforated plates.

[0013] Preferably, multiple sets of the flow guide seats are disposed between the vent holes at both ends of the connecting seat, and the sidewalls of the flow guide seats are obliquely arranged along the airflow direction.

[0014] In summary, this utility model has the following beneficial effects: 1. This utility model extends the sound propagation path in the first chamber, and the gas is blocked by multiple sets of staggered guide seats and transmitted along the path formed by the guide seats, thus achieving a good primary noise reduction effect.

[0015] 2. This utility model sets multiple sets of hollow cavity plates in the second chamber. When sound propagates to the hollow cavity plates, it generates sound energy reflection and interference to form a secondary noise reduction effect. The generated energy is eliminated by the damping particles filled in the energy dissipation cavity.

[0016] 3. This utility model sets up a perforated tube, an inner tube, and a partition in the third chamber. By generating airflow resonance between the two sets of partitions, a large amount of noise is absorbed, thereby eliminating most of the low-frequency noise. The perforated tube and the inner tube change the direction of sound wave propagation by utilizing the change of the pipe cross-section. The sound waves are reflected, interfered, and the gas and the hole are rubbed together to consume noise energy, thus achieving the purpose of noise reduction.

[0017] 4. This utility model further absorbs noise by setting a perforated plate and a sound-absorbing material layer in the fourth chamber, thereby achieving a more excellent noise reduction effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the external structure of this utility model; Figure 2 This is a side view of the structure of this utility model; Figure 3 This is a schematic diagram of the internal structure of this utility model; In the diagram, 1-shell, 2-intake pipe, 3-exhaust tailpipe, 4-first chamber, 5-second chamber, 6-third chamber, 7-fourth chamber, 8-hollow cavity plate, 9-energy dissipation cavity, 10-damping particles, 11-rib plate, 12-vent hole, 13-connecting seat, 14-perforated pipe, 15-inner tube, 16-partition plate, 17-flow guide seat, 18-perforated plate, 19-sound absorbing material layer. Detailed Implementation

[0019] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. These embodiments do not constitute a limitation on this utility model.

[0020] like Figures 1 to 3 The silencing device for a desiccant dryer shown includes a housing 1, an air inlet pipe 2, and an exhaust tailpipe 3. The housing 1 is open at both ends and hollow. The air inlet pipe 2 and the exhaust tailpipe 3 are respectively installed at both ends of the housing 1 and are connected to both ends of the housing 1. The interior of the housing 1 includes a first chamber 4, a second chamber 5, a third chamber 6, and a fourth chamber 7 connected in sequence from the air inlet pipe 2 to the exhaust tailpipe 3. One end of the air inlet pipe 2 is connected to the first chamber 4 inside the housing 1. The second chamber 5 is provided with multiple sets of hollow cavity plates 8 that are connected to each other. An energy dissipation chamber 9 is provided between the multiple sets of hollow cavity plates 8 and the housing 1. The energy dissipation chamber 9 is filled with damping particles 10. One end of the exhaust tailpipe 3 is connected to the fourth chamber 7 inside the housing 1.

[0021] Four sets of ribs 11 are provided at both ends of the outer shell 1 and at the connection points of the air intake pipe 2 and the exhaust tail pipe 3. The four sets of ribs 11 are arranged in a ring array.

[0022] The exhaust tailpipe 3 and the intake pipe 2 are closed at one end inside the housing 1. The side wall of the closed end of the exhaust tailpipe 3 and the intake pipe 2 is provided with multiple sets of vent holes 12. A connecting seat 13 is also fixedly sleeved inside the first chamber 4 on the outside of the intake pipe 2. The connecting seat 13 has an H-shaped cross section. Multiple sets of vent holes 12 are provided between the two ends of the connecting seat 13 and the connecting side wall of the first chamber 4. A gap is provided between the side wall of the connecting seat 13 and the inner wall of the housing 1 to connect the vent holes 12 at both ends of the connecting seat 13.

[0023] At least five sets of hollow cavity plates 8 are provided. Each set of hollow cavity plates 8 is a hollow frustum shape, and the hollow cavity plates 8 are sequentially sealed and connected end to end.

[0024] The inlet inner diameter of each set of hollow cavity plates 8 is half the outlet inner diameter, and the inlet inner diameter of the first set of hollow cavity plates 8 is smaller than the inner diameter of the tail of the connecting seat 13.

[0025] The third chamber 6 includes a perforated tube 14, an inner tube 15, and two sets of partitions 16 perpendicular to the direction of the housing 1. The two sets of partitions 16 are arranged parallel to each other and are sealed to the inside of the housing 1. At least four sets of inner tubes 15 are arranged in a ring array. Each inner tube 15 passes through two sets of partitions 16. The perforated tube 14 is open at both ends. One end of the perforated tube 14 is connected to the second chamber 5. The other end of the perforated tube 14 passes through one set of partitions 16 and is connected to the space between the two sets of partitions 16. The side wall of one end of the perforated tube 14 is provided with multiple sets of vent holes 12 near the second chamber 5. The perforated tube 14 is connected to the inner tube 15 through the vent holes 12.

[0026] Multiple sets of flow guide seats 17 are also provided between the side wall of the connecting seat 13 and the inner wall of the housing 1, and all sets of flow guide seats 17 are hollow frustum-shaped.

[0027] The fourth chamber 7 is provided with two sets of perforated plates 18 perpendicular to the direction of the shell 1, and a sound-absorbing material layer 19 is sandwiched between the perforated plates 18.

[0028] Multiple sets of flow guide seats 17 are arranged between the vent holes 12 at both ends of the connecting seat 13, and the side walls of the flow guide seats 17 are arranged obliquely along the airflow direction.

[0029] This invention extends the sound propagation path within the first chamber, where the gas is blocked by multiple sets of staggered guide seats and transmitted along the path formed by the guide seats, achieving a good primary noise reduction effect.

[0030] This invention sets up multiple hollow cavity plates in the second chamber. When sound propagates to the hollow cavity plates, it generates sound energy reflection and interference to form a secondary noise reduction effect. The generated energy is eliminated by the damping particles filled in the noise reduction cavity.

[0031] This invention incorporates a perforated tube, an inner tube, and partitions within a third chamber. By generating airflow resonance between the two sets of partitions, a significant amount of noise is absorbed, thereby eliminating most low-frequency noise. The perforated tube and inner tube utilize changes in their cross-sections to alter the direction of sound wave propagation. This results in reflection, interference, and gas-hole friction within the tube, consuming noise energy and achieving noise reduction.

[0032] This invention further absorbs noise by setting a perforated plate and a sound-absorbing material layer in the fourth chamber, thereby achieving a superior noise reduction effect.

[0033] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Those skilled in the art can make various modifications or equivalent substitutions to the present utility model within its substance and protection scope, and such modifications or equivalent substitutions should also be considered to fall within the protection scope of the present utility model's technical solution.

Claims

1. A noise reduction device for a desiccant dryer, characterized in that, The device includes a housing, an intake pipe, and an exhaust tailpipe. The housing is open at both ends and hollow. The intake pipe and exhaust tailpipe are respectively installed at both ends of the housing and connected to both ends of the housing. The interior of the housing includes a first chamber, a second chamber, a third chamber, and a fourth chamber connected in sequence from the intake pipe to the exhaust tailpipe. One end of the intake pipe is connected to the first chamber inside the housing. The second chamber is provided with multiple sets of hollow cavity plates that are connected to each other. An energy dissipation chamber is provided between the multiple sets of hollow cavity plates and the housing. The energy dissipation chamber is filled with damping particles. One end of the exhaust tailpipe is connected to the fourth chamber inside the housing.

2. The noise reduction device for a desiccant dryer according to claim 1, characterized in that: Four sets of ribs are provided at both ends of the outer shell and at the connection points of the air intake pipe and the exhaust tailpipe. The four sets of ribs are arranged in a ring array.

3. A noise reduction device for a desiccant dryer according to claim 1, characterized in that: The exhaust tailpipe and the intake pipe are closed at one end inside the housing. The side wall of the closed end of the exhaust tailpipe and the intake pipe is provided with multiple sets of vent holes. A connecting seat is also fixedly sleeved inside the first chamber on the outside of the intake pipe. The connecting seat has an H-shaped cross-section. Multiple sets of vent holes are provided between the two ends of the connecting seat and the connecting side wall of the first chamber. A gap is provided between the side wall of the connecting seat and the inner wall of the housing to connect the vent holes at both ends of the connecting seat.

4. A noise reduction device for a desiccant dryer according to claim 3, characterized in that: The hollow cavity plate is provided in at least five sets, and each set of hollow cavity plates is a hollow frustum shape. The hollow cavity plates in each set are sequentially sealed and connected end to end.

5. A noise reduction device for a desiccant dryer according to claim 4, characterized in that: The inlet inner diameter of each hollow cavity plate is half the outlet inner diameter, and the inlet inner diameter of the first hollow cavity plate is smaller than the inner diameter of the tail of the connecting seat.

6. A noise reduction device for a desiccant dryer according to claim 1, characterized in that: The third chamber includes a perforated tube, an inner tube, and two sets of partitions perpendicular to the housing. The two sets of partitions are arranged parallel to each other and are sealed to the inside of the housing. At least four sets of inner tubes are arranged in a ring array. Each inner tube passes through two sets of partitions. The perforated tube is open at both ends. One end of the perforated tube communicates with the second chamber, and the other end of the perforated tube passes through one set of partitions and communicates with the space between the two sets of partitions. The side wall of one end of the perforated tube is provided with multiple sets of vent holes near the second chamber. The perforated tube communicates with the inner tube through the vent holes.

7. A noise reduction device for a desiccant dryer according to claim 3, characterized in that: Multiple sets of flow guide seats are also provided between the side wall of the connecting seat and the inner wall of the shell, and all sets of flow guide seats are hollow frustum-shaped.

8. A noise reduction device for a desiccant dryer according to claim 1, characterized in that: The fourth chamber is provided with two sets of perforated plates perpendicular to the direction of the shell, and a layer of sound-absorbing material is sandwiched between the perforated plates.

9. A noise reduction device for a desiccant dryer according to claim 7, characterized in that: Multiple sets of the flow guide seats are disposed between the vent holes at both ends of the connecting seat, and the sidewalls of the flow guide seats are obliquely arranged along the airflow direction.

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