Silencer of drying machine

Abstract

The utility model discloses a silencer of a drying machine. The silencer comprises an outer barrel body, an airflow diffuser; a gas flow distributor; the first-stage noise reduction mechanism comprises flow guide cover bodies which are vertically arranged at intervals in a staggered mode and fixedly connected to the inner side wall of the outer cylinder and the outer side wall of the airflow distributor respectively, and a plurality of noise reduction cotton rings with arc-shaped sections are fixedly connected to the upper surface and the lower surface of each flow guide cover body side by side front and back; the noise reduction cotton rings which are oppositely arranged on the upper and lower flow guide cover bodies are staggered and overlapped front and back at intervals; the secondary silencing mechanism comprises a sound absorbing material layer which is filled between an upper fixed pore plate and a lower fixed pore plate in the outer cylinder; and the three-stage silencing mechanism comprises a hollow cylinder part which is fixedly connected in the air flow distributor and is filled with damping particles, and the upper part of the hollow cylinder part is connected to the lower fixed pore plate through a fixedly connected connecting rod. According to the utility model, the noise reduction effect is effectively and obviously improved by combining various noise reduction modes such as path extension noise reduction, collision energy consumption noise reduction and absorption noise reduction in a limited space.

Description

Technical Field

[0001] The utility model relates to the technical field of silencing equipment, in particular to a desiccant dryer silencer. Background Art

[0002] A desiccant dryer, also known as a compressed air adsorption dryer, is an indispensable device that is matched with a screw air compressor and an air precision filter for processing compressed air gas source.

[0003] During the operation of the desiccant dryer, continuous exhaust operation needs to be formed, which results in obvious exhaust noise during the operation of the equipment and causes relatively large noise pollution. Regarding the exhaust pollution, the existing method is to directly install a silencer at the end of the exhaust pipe to achieve the effect of noise reduction. Through the setting of the silencer, although the exhaust noise formed during the heating regeneration and blow-down regeneration processes can be reduced to a certain extent, due to the limited installation space of the equipment, the specifications of the silencer adopted are generally not too large, or too many silencers are not suitable to be set, resulting in relatively limited noise reduction effect, so that there is still obvious noise during the actual use and operation of the equipment.

[0004] Therefore, on the basis of being relatively small in structure and specifications, the research purpose of the utility model is to design a desiccant dryer silencer that can effectively and significantly improve the noise reduction effect in a limited space. Content of the Utility Model

[0005] In view of the above technical problems existing in the prior art, the utility model provides a desiccant dryer silencer, which can effectively solve the above technical problems existing in the prior art.

[0006] The technical solution of the utility model is as follows:

[0007] A desiccant dryer silencer, comprising:

[0008] An outer cylinder body, both ends of the outer cylinder body are closed and are respectively provided with an exhaust port and a fitting port;

[0009] An air flow diffuser, the air flow diffuser is installed at the fitting port of the outer cylinder body, and one end of it extends outward to the outside of the outer cylinder body to be provided with an air inlet, the other end of it extends to the inner side of the outer cylinder body and is closed, and diffusion pores are evenly distributed on the surface of the air flow diffuser at the closed end;

[0010] An air flow distributor, the air flow distributor is installed inside the outer cylinder body and covers the outside of the air flow diffuser, and dispersion pores are evenly distributed on the surface of the air flow distributor below the diffusion pores;

[0011] The primary sound - silencing mechanism includes flow - guiding cover bodies that are vertically spaced and staggered and fixedly connected to the inner sidewall of the outer cylinder and the outer sidewall of the air - flow distributor respectively. The flow - guiding cover bodies are in the shape of a hollow frustum of a cone, and their upper and lower ends are connected. On the upper and lower surfaces of the flow - guiding cover bodies, several circles of sound - absorbing cotton rings with cross - sections in the shape of an arc and bent against the air - flow direction are fixedly connected side by side in the front - and - back direction. The sound - absorbing cotton rings located on the upper and lower flow - guiding cover bodies and arranged oppositely are spaced and staggered and overlapped in the front - and - back direction;

[0012] The secondary sound - silencing mechanism includes an upper fixing orifice plate and a lower fixing orifice plate that are vertically spaced and fixedly connected inside the outer cylinder above the air - flow distributor. Inside the outer cylinder, between the upper fixing orifice plate and the lower fixing orifice plate, a sound - absorbing material layer is filled. Many air - permeable holes penetrating through the upper and lower parts are evenly distributed on the upper fixing orifice plate and the lower fixing orifice plate;

[0013] The tertiary sound - silencing mechanism includes a hollow cylinder filled with damping particles and fixedly connected inside the air - flow distributor above the air - flow diffuser. Above the hollow cylinder, a connecting rod penetrating through the air - flow distributor is fixedly connected, and the connecting rod extends outward and is connected to the lower fixing orifice plate.

[0014] The outer cylinder, the air - flow diffuser, and the air - flow distributor are all in a hollow cylindrical structure and are coaxially arranged.

[0015] On the surface of the air - flow diffuser, at least two different - sized diffusion air holes are distributed in a staggered manner in the circumferential direction, and the aperture of the diffusion air holes is smaller than the aperture of the dispersion air holes. The dispersion air holes are longitudinally elongated holes.

[0016] The sound - absorbing cotton rings are fixedly installed on the flow - guiding cover bodies by gluing.

[0017] In the middle of the closed end of the air - flow diffuser, a through - hole is provided, and a corresponding rubber ring is fixedly connected at the through - hole by gluing. The connecting rod passes through the rubber ring by interference fit.

[0018] At one end of the air - flow diffuser at the air inlet, a connecting flange is fixedly connected.

[0019] The aperture of the exhaust port is larger than the aperture of the air inlet.

[0020] The sound - absorbing material layer is a high - temperature - resistant sound - absorbing cotton layer.

[0021] Advantages of the present utility model:

[0022] 1) In the present utility model, within a limited space, through a combination of multiple sound - silencing methods such as sound - silencing by extending the path, sound - silencing by collision energy dissipation, and absorption sound - silencing, and each method combines and promotes each other, effectively and significantly improving the noise - reduction effect.

[0023] 2) During the noise reduction process of the present utility model, first, through the structural arrangement of the outer cylinder, the air flow diffuser, and the air flow distributor which are sleeved inside and outside, the sound propagation process is extended within a limited space. By gradually passing through each sound absorption area, the reflection and interference of sound energy are generated to form a preliminary sound elimination effect.

[0024] 3) Then, through the intervention of the primary sound absorption mechanism, a number of sound absorption cotton rings with an arc-shaped cross-section bent back against the air flow direction are fixedly connected in several circles side by side in the front and back with the upper and lower spaced and staggered guide hoods. And the sound absorption cotton rings located on the upper and lower guide hoods and arranged oppositely are spaced and staggered and overlapped in the front and back. Thus, not only the sound propagation path is further extended for sound elimination, but also the gas is blocked by the staggered sound absorption cotton rings and transmitted along the path formed by the sound absorption cotton rings. And the sound wave will collide with the sound absorption cotton rings and be partially absorbed, achieving a secondary sound elimination effect.

[0025] 4) Finally, a secondary sound absorption mechanism is arranged on the front side of the exhaust port. Through the sound absorption material layer, the sound that has been sound-absorbed multiple times is absorbed again. And a tertiary sound absorption mechanism is formed by connecting the hollow cylinder and the lower fixed hole plate through the connecting rod. For the collision noise generated when the gas is discharged from the outer cylinder through the lower fixed hole plate and the collision noise in the air flow diffuser, the double noise generated by the collision during the gas propagation is eliminated by the collision energy consumption of the damping particles, so as to form a multiple sound elimination effect, thereby further effectively ensuring the sound elimination effect of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a structural schematic diagram of the present utility model.

[0027] Figure 2 is a longitudinal sectional view of the present utility model

[0028] Figure 3 is a schematic diagram of gas flow.

[0029] In the drawings: outer cylinder body 1, exhaust port 101, air flow diffuser 2, air inlet 201, diffusion air holes 202, air flow distributor 3, dispersion air holes 301, guide hood 4, sound absorption cotton ring 5, upper fixed hole plate 6, lower fixed hole plate 7, damping particles 8, hollow cylinder 9, connecting rod 10, rubber ring 11, connecting flange 12, ventilation holes 13, sound absorption material layer 14. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] For the convenience of those skilled in the art to understand, the structure of the present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments:

[0031] Refer to Figures 1-3 , a dryer silencer, comprising:

[0032] An outer cylinder body 1, both ends of the outer cylinder body 1 are closed and are respectively provided with an exhaust port 101 and a fitting port;

[0033] An air flow diffuser 2, the air flow diffuser 2 is installed at the fitting port of the outer cylinder body 1, and one end of it extends outward and is provided with an air inlet 201 on the outer side of the outer cylinder body 1, the other end of it extends inward to the inner side of the outer cylinder body 1 and is closed, and diffusion air holes 202 are evenly distributed on the surface of the air flow diffuser 2 at the closed end;

[0034] An air flow distributor 3, the air flow distributor 3 is installed inside the outer cylinder body 1 and covers the outside of the air flow diffuser 2, and dispersion air holes 301 are evenly distributed on the surface of the air flow distributor 3 below the diffusion air holes 202;

[0035] A primary sound absorption mechanism, which includes guide cover bodies 4 that are arranged at intervals up and down and are respectively fixed on the inner side wall of the outer cylinder body 1 and the outer side wall of the air flow distributor 3, the guide cover bodies 4 are in a hollow frustum shape and are communicated at both the upper and lower ends, and a plurality of circles of sound absorption cotton rings 5 with cross-sections in an arc shape and bent in the direction opposite to the air flow direction are fixedly connected to the front and rear of the upper and lower surfaces of the guide cover bodies 4, and the sound absorption cotton rings 5 located on the upper and lower guide cover bodies 4 and arranged oppositely are spaced apart from each other in the front and rear and are staggered and overlapped;

[0036] A secondary sound absorption mechanism, which includes an upper fixed hole plate 6 and a lower fixed hole plate 7 that are fixed at intervals up and down inside the outer cylinder body 1 above the air flow distributor 3, a sound absorption material layer 14 is filled between the upper fixed hole plate 6 and the lower fixed hole plate 7 inside the outer cylinder body 1, and a plurality of air permeable holes 13 penetrating through the upper and lower of them are evenly distributed on the upper fixed hole plate 6 and the lower fixed hole plate 7;

[0037] A tertiary sound absorption mechanism, which includes a hollow cylinder 9 that is fixed inside the air flow distributor 3 above the air flow diffuser 2 and is filled with damping particles 8, a connecting rod 10 that penetrates through the air flow distributor 3 is fixedly connected above the hollow cylinder 9, and the connecting rod 10 extends outward and is connected to the lower fixed hole plate 7.

[0038] In the utility model, in a limited space, through a combination of multiple sound absorption methods such as sound absorption by extending the path, sound absorption by collision energy consumption, and absorption sound absorption, and each method combines and promotes each other, effectively and significantly improving the noise reduction effect.

[0039] The outer cylinder body 1, the air flow diffuser 2 and the air flow distributor 3 are all in a hollow cylindrical structure and are coaxially arranged.

[0040] At least two different sizes of diffusion air holes 202 are arranged in a circumferential distribution and staggered on the surface of the air flow diffuser 2, and the aperture of the diffusion air holes 202 is smaller than the aperture of the dispersion air holes 301, and the dispersion air holes 301 are longitudinal long holes.

[0041] In the process of noise reduction of the present utility model, firstly, the structural settings of the outer cylinder member 1, the air flow diffuser 2 and the air flow distributor 3 sleeved inside and outside are used to extend the sound propagation process in a limited space, and the sound energy is reflected and interfered by gradually passing through each sound absorption area, so as to form a preliminary sound elimination effect.

[0042] The sound absorption cotton ring 5 is fixedly installed on the guide cover body 4 by gluing.

[0043] Then, through the intervention of the primary sound absorption mechanism, a plurality of sound absorption cotton rings 5 with an arc-shaped cross section bent in the direction opposite to the air flow direction are fixedly connected side by side in front and back at intervals up and down on the front and back of the guide cover body 4, and the sound absorption cotton rings 5 located on the upper and lower guide cover bodies 4 and arranged oppositely are staggered and overlapped in front and back at intervals, so as to not only further extend the sound propagation path for sound elimination, but also the gas is blocked by the staggered sound absorption cotton rings 5 and transmitted along the path formed by the sound absorption cotton rings 5, and the sound wave will collide with the sound absorption cotton rings 5 and be partially absorbed, achieving a secondary sound absorption effect.

[0044] A through hole is provided in the middle of the closed end of the air flow diffuser 2, and a corresponding rubber ring 11 is fixedly connected to the through hole by gluing, and the connecting rod 10 passes through the rubber ring 11 by interference fit.

[0045] Finally, a secondary sound absorption mechanism is provided on the front side of the exhaust port 101, and the sound absorption material layer 14 is used to absorb the sound that has been sound-absorbed many times again, and a tertiary sound absorption mechanism is formed by connecting the hollow cylinder member 9 and the lower fixing hole plate 7 through the connecting rod 10. For the collision noise generated when the gas is discharged from the outer cylinder member 1 through the lower fixing hole plate 7 and the collision noise in the air flow diffuser 2, the damping particles 8 are used to collide and consume energy to eliminate the double noise generated by the collision during the gas propagation process, so as to form a multi-stage sound absorption effect, thereby further effectively ensuring the sound absorption effect of the present utility model.

[0046] A connecting flange 12 is fixedly connected to one end of the air flow diffuser 2 at the air inlet 201.

[0047] The aperture of the exhaust port 101 is larger than the aperture of the air inlet 201.

[0048] The sound absorption material layer 14 is a high-temperature resistant sound absorption cotton layer.

[0049] The above is only the preferred embodiment of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and retouches can be made, and these improvements and retouches should also be regarded as the protection scope of the present utility model.

Claims

1. A dryer silencer, characterized in that: include: An outer cylinder (1), wherein both ends of the outer cylinder (1) are closed and are respectively provided with an exhaust port (101) and an embedding port; An air diffuser (2), the air diffuser (2) being mounted at the mounting opening of the outer cylinder (1), and having one end extending outwardly from the outer side of the outer cylinder (1) and provided with an air inlet (201), and having the other end extending inwardly from the inner side of the outer cylinder (1) and being closed, and having diffusion holes (202) evenly distributed on the surface of the air diffuser (2) at the closed end; An air flow distributor (3), the air flow distributor (3) being installed in the outer cylinder (1) and covering the outer side of the air flow diffuser (2), and the surface of the air flow distributor (3) being evenly distributed with dispersion holes (301) below the diffusion holes (202); The first-stage silencer mechanism comprises a flow guide body (4) which is staggered and arranged at intervals in the upper and lower parts and fixedly connected to the inner wall of the outer cylinder (1) and the outer wall of the air flow distributor (3), respectively; the flow guide body (4) is in the shape of a hollow truncated cone and its upper and lower ends are connected; the upper and lower surfaces of the flow guide body (4) are fixedly connected in front and back with a plurality of circles of silencer cotton rings (5) with curved cross-sections bent in the opposite direction of the air flow; the silencer cotton rings (5) located on the upper and lower flow guide bodies (4) and arranged oppositely are spaced in the front and back and staggered and overlapped; A two-stage silencer mechanism comprises an upper fixed orifice plate (6) and a lower fixed orifice plate (7) fixedly connected to the outer cylinder (1) at an upper and lower interval and located above the airflow distributor (3); a sound absorbing material layer (14) is filled between the upper fixed orifice plate (6) and the lower fixed orifice plate (7) in the outer cylinder (1); and a plurality of air holes (13) are evenly distributed on the upper fixed orifice plate (6) and the lower fixed orifice plate (7) and run through the upper and lower parts thereof; The three-stage silencer mechanism comprises a hollow cylinder (9) fixedly connected to the airflow distributor (3) above the airflow diffuser (2) and filled with damping particles (8); a connecting rod (10) penetrating the airflow distributor (3) is fixedly connected above the hollow cylinder (9); the connecting rod (10) extends outwardly and is connected to the lower fixed orifice plate (7).

2. A dryer silencer according to claim 1, characterized in that: The outer cylinder (1), the air flow diffuser (2) and the air flow distributor (3) are all hollow cylindrical structures and are coaxially arranged.

3. A dryer silencer according to claim 1, characterized in that: The surface of the airflow diffuser (2) is staggeredly provided with at least two diffusion holes (202) of different sizes distributed circumferentially, and the aperture of the diffusion hole (202) is smaller than the aperture of the dispersion hole (301), and the dispersion hole (301) is a longitudinally elongated hole.

4. A dryer silencer according to claim 1, characterized in that: The silencer cotton ring (5) is fixedly mounted on the air guide cover body (4) by gluing.

5. A dryer silencer according to claim 1, characterized in that: A through hole is provided in the middle of the closed end of the airflow diffuser (2), and a corresponding rubber ring (11) is fixedly connected to the through hole by gluing, and the connecting rod (10) passes through the rubber ring (11) by interference fit.

6. A dryer silencer according to claim 1, characterized in that: The air flow diffuser (2) is fixedly connected to a connecting flange (12) at one end of the air inlet (201).

7. A dryer silencer according to claim 1, characterized in that: The aperture of the exhaust port (101) is larger than the aperture of the air inlet (201).

8. The dryer silencer according to claim 1, characterized in that: The sound-absorbing material layer (14) is a high-temperature resistant sound-absorbing cotton layer.

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