Silencer for air outlet of air compressor

Abstract

The utility model relates to the technical field of air compressor silencing equipment, in particular to an air compressor air outlet silencer which comprises an air outlet pipe, the air outlet pipe is arranged at an air outlet of an air compressor, a silencing assembly used for absorbing noise in the air outlet pipe is arranged on the air outlet pipe, and the silencing assembly comprises a silencing pipe detachably arranged on the air outlet pipe. The silencing pipe and the air outlet pipe are coaxially arranged, a fixing piece is arranged on the air outlet pipe and used for fixing the silencing pipe to the air outlet pipe, a plurality of sound insulation boxes are arranged in the silencing pipe and evenly distributed in the radial direction of the axis of the silencing pipe, and an exhaust channel is formed between every two adjacent sound insulation boxes. The sound insulation box is provided with a sound absorption piece used for absorbing noise. The air conditioner has the effects of reducing noise pollution and improving the working environment of indoor workers.

Description

Technical Field

[0001] This application relates to the technical field of air compressor silencing equipment, and in particular to a muffler for the air outlet of an air compressor. Background Art

[0002] The control room of a mixing plant is a key part of a concrete mixing plant. It integrates various control and monitoring devices, such as electronic control devices, batching control devices, air pumps and other devices, as well as related switching power supply devices. These devices together constitute the control system of the concrete mixing plant, enabling operators to monitor and manage each system of the mixing plant in a centralized area.

[0003] And a large air compressor is usually equipped in the control room of the mixing plant. An air compressor, abbreviated as an air compressor, is a device that converts the mechanical energy of a prime mover (usually an electric motor) into gas pressure energy, used to compress air and widely applied in industrial production.

[0004] Chinese Patent with Publication No. CN111102157A discloses an air compressor. The air compressor has a driving motor, an air compressor, an oil separation barrel, a gas storage tank and a control cabinet. The control cabinet is electrically connected to the driving motor, and the driving motor is used to drive the air compressor to work. The oil separation barrel is respectively connected to the air compressor and the gas storage tank through pipelines. The air compressor has a sound insulation sponge attached to the inner wall of the housing.

[0005] In the above technology, although a sound insulation sponge is attached to the inner wall of the housing, due to a large number of pores opened at the air outlet of the air compressor, the noise generated during the operation of the air compressor will be transmitted to the indoor air through the pores, which will have a noise impact on indoor workers and seriously affect the physical and mental health of indoor workers, so there are deficiencies. Utility Model Content

[0006] In order to improve the problem that the noise generated during the operation of the air compressor is transmitted to the room through the air outlet and affects the physical and mental health of indoor workers, this application provides a muffler for the air outlet of an air compressor.

[0007] A muffler for the air outlet of an air compressor provided by this application adopts the following technical solutions:

[0008] An air compressor outlet muffler, comprising an air outlet pipe, the air outlet pipe is arranged at the air outlet of the air compressor, and a silencing component for absorbing the noise in the air outlet pipe is arranged on the air outlet pipe. The silencing component includes a silencing pipe detachably arranged on the air outlet pipe. The silencing pipe is coaxially arranged with the air outlet pipe. A fixing member is arranged on the air outlet pipe, and the fixing member is used to fix the silencing pipe on the air outlet pipe. A plurality of sound insulation boxes are arranged in the silencing pipe, and the plurality of sound insulation boxes are uniformly arranged along the radial direction of the axis of the silencing pipe. An exhaust passage is formed between two adjacent sound insulation boxes, and a sound absorption member for adsorbing noise is arranged on the sound insulation box.

[0009] By adopting the above technical solution, the worker fixes the silencing pipe on the air outlet pipe through the fixing member. During the process that the heat generated by the air compressor is discharged from the air compressor through the exhaust passage, the noise will be adsorbed and weakened by the sound absorption member on the sound insulation box, thereby reducing the magnitude of the noise transmitted by the air outlet pipe, and thus reducing the influence on the indoor staff.

[0010] Optionally, the cross-section of the sound insulation box is V-shaped and hollow inside. The sound absorption member includes sound-absorbing cotton arranged inside the sound insulation box, and a plurality of sound-damping holes communicating with the inside thereof are opened on the V-shaped concave side of the sound insulation box.

[0011] By adopting the above technical solution, when the noise propagates to the exhaust passage, the V-shaped sound insulation box will block the propagation path of the noise. The noise will be continuously reflected and refracted in the exhaust passage. At the same time, most of the noise will propagate into the cavity of the sound insulation box through the sound-damping holes, and will be continuously reflected, refracted and absorbed by the porous structure of the sound-absorbing cotton, so as to adsorb the noise and further reduce the propagation of the noise.

[0012] Optionally, along the radial direction of the axis of the air outlet pipe, the V-shaped tip of one of the sound insulation boxes located below is located in the V-shaped opening groove of one of the sound insulation boxes located above.

[0013] By adopting the above technical solution, the propagation path of the noise is blocked, so that the noise is continuously reflected and refracted in the exhaust passage.

[0014] Optionally, an installation slot for inserting the silencing pipe is opened between the inner and outer side walls of the air outlet pipe. The fixing member includes a fixing plate arranged on the silencing pipe, and a fixing bolt is bolted on the air outlet pipe. The fixing plate is slidably sleeved on the fixing bolt.

[0015] By adopting the above technical solution, after the worker inserts the silencing pipe into the installation slot on the air outlet pipe, the worker tightens the fixing bolt, and the fixing bolt presses the fixing plate against the air outlet pipe, so as to realize the installation and fixing of the silencing pipe.

[0016] Optionally, a plurality of water baffle plates are arranged on the air outlet pipe. The plurality of water baffle plates are uniformly arranged along the radial direction of the axis of the silencing pipe. The water baffle plates are arranged obliquely away from the sound insulation box in the direction from top to bottom.

[0017] By adopting the above technical solution, the possibility that external water flows into the air compressor through the air outlet pipe and causes damage to the air compressor is reduced.

[0018] Optionally, a chute rail with a concave cross-section is arranged at the installation notch of the air outlet pipe. The length direction of the chute rail is parallel to the insertion direction of the silencing pipe. A sliding strip is arranged on the silencing pipe and is slidably matched with the chute rail. A plurality of rollers are rotatably arranged on the sliding strip. The plurality of rollers are arranged along the length direction of the sliding strip. The rollers are in rolling cooperation with the chute rail.

[0019] By adopting the above technical solution, when workers install the silencing pipe, the rolling cooperation between the rollers and the chute rail reduces the friction between the chute rail and the sliding strip. At the same time, the sliding cooperation between the chute rail and the sliding strip plays a guiding role for the silencing pipe, facilitating the workers to insert the silencing pipe.

[0020] Optionally, a dust-brushing rack with a V-shaped cross-section is arranged on the air outlet pipe. The dust-brushing rack is located between two adjacent sound insulation boxes. A plurality of bristles are arranged on the dust-brushing rack. The bristles abut against the sound absorption holes.

[0021] By adopting the above technical solution, when workers pull out the silencing pipe, the bristles on the dust-brushing rack brush the sound absorption holes on the sound insulation box, thereby cleaning the dust attached to the sound absorption holes, which is beneficial to reducing the possibility that the sound absorption holes are blocked by dust and noise cannot be transmitted into the interior of the sound insulation box.

[0022] Optionally, a dust guiding groove with a V-shaped cross-section is arranged on the air outlet pipe and below the dust-brushing rack. Both ends of the V shape of the dust guiding groove are communicated with a dust discharging pipe. The dust discharging pipe extends outside the air outlet pipe.

[0023] By adopting the above technical solution, the brushed dust will fall into the V-shaped dust guiding groove and slide down along the inclined surface of the dust guiding groove into the dust discharging pipe, and finally be discharged by the dust discharging pipe, thereby reducing the possibility of dust accumulation in the air outlet pipe.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. Workers fix the silencing pipe on the air outlet pipe through fixing parts. When the heat generated by the air compressor is discharged from the air compressor through the exhaust passage, the noise will be adsorbed by the sound absorption parts on the sound insulation box and weakened, thereby reducing the size of the noise transmitted by the air outlet pipe, and thus reducing the impact on indoor workers.

[0026] 2. When the noise propagates to the exhaust air duct, the sound insulation box in a V shape will block the propagation path of the noise. The noise will continuously reflect and refract in the exhaust air duct. At the same time, most of the noise will propagate into the cavity of the sound insulation box through the sound absorption holes, and will be continuously reflected, refracted and absorbed by the porous structure of the sound absorption cotton, so as to adsorb the noise, thereby reducing the propagation of the noise;

[0027] 3. When the worker pulls out the sound absorption pipe, the bristles on the dust brushing rack brush the sound absorption holes on the sound insulation box, so as to clean the dust attached to the sound absorption holes, which is beneficial to reducing the possibility that the sound absorption holes are blocked by dust and the noise cannot enter the interior of the sound insulation box. Description of the Drawings

[0028] Figure 1 is the structural schematic diagram of Embodiment 1 of the present application.

[0029] Figure 2 is the structural schematic diagram of the positional relationship among the air outlet pipe, the sound absorption pipe and the water baffle in Embodiment 1 of the present application.

[0030] Figure 3 is the sectional view of the positional relationship among the air outlet pipe, the sound insulation box and the sound absorption cotton in Embodiment 1 of the present application.

[0031] Figure 4 is the structural schematic diagram of the positional relationship among the sliding chute rail, the dust guiding groove and the sliding strip in Embodiment 2 of the present application.

[0032] Figure 5 is the sectional view of the positional relationship among the dust guiding groove, the dust brushing rack and the dust exhaust pipe in Embodiment 2 of the present application.

[0033] Description of the Reference Numerals: 1. Air outlet pipe; 2. Sound absorption assembly; 21. Sound absorption pipe; 22. Fixing member; 221. Fixing plate; 222. Fixing bolt; 23. Sound insulation box; 24. Exhaust air duct; 25. Sound absorption member; 251. Sound absorption cotton; 252. Sound absorption hole; 3. Installation notch; 4. Water baffle; 5. Sliding chute rail; 6. Sliding strip; 7. Roller; 8. Dust brushing rack; 9. Bristle; 10. Dust guiding groove; 11. Dust exhaust pipe. Detailed Embodiment

[0034] The following is a further detailed description of the present application in combination with the attached Figures 1-5 drawings.

[0035] Embodiment 1 of the present application discloses a muffler for the air outlet of an air compressor.

[0036] Embodiment 1

[0037] Refer to Figure 1, an air compressor outlet muffler includes an air outlet pipe 1, which is bolted to the air outlet of the air compressor. A plurality of water baffle plates 4 are bolted on the air outlet pipe 1. The plurality of water baffle plates 4 are evenly arranged along the radial direction of the axis of the sound-absorbing pipe 21. The water baffle plates 4 are inclined towards the outside of the air outlet pipe 1 in the direction from top to bottom. A sound-absorbing component 2 for absorbing the noise in the air outlet pipe 1 is arranged on the air outlet pipe 1.

[0038] Refer to Figure 1 , Figure 2 and Figure 3 , the sound-absorbing component 2 includes a sound-absorbing pipe 21 detachably arranged on the air outlet pipe 1. The sound-absorbing pipe 21 is coaxially arranged with the air outlet pipe 1. A fixing member 22 is arranged on the air outlet pipe 1. The fixing member 22 is used to fix the sound-absorbing pipe 21 on the air outlet pipe 1. The fixing member 22 includes a fixing plate 221 welded to the sound-absorbing pipe 21. An installation notch 3 for inserting the sound-absorbing pipe 21 is opened between the inner and outer side walls of the air outlet pipe 1. A fixing bolt 222 is bolted on the air outlet pipe 1. The fixing plate 221 is slidably sleeved on the fixing bolt 222.

[0039] The worker inserts the sound-absorbing pipe 21 into the installation notch 3 on the air outlet pipe 1, and then tightens the fixing bolt 222. The fixing bolt 222 presses the fixing plate 221 against the air outlet pipe 1.

[0040] Refer to Figure 1 , Figure 2 and Figure 3 , on the side of the sound-absorbing pipe 21 facing away from the water baffle plates 4, a plurality of sound insulation boxes 23 with cross-sections all in a V shape are arranged. The surfaces of the sound insulation boxes 23 are sprayed with a sound-absorbing coating (not shown in the figure). The inside of the sound insulation boxes 23 is hollow and the V-shaped open ends are vertically downward. The plurality of sound insulation boxes 23 are evenly arranged along the radial direction of the axis of the sound-absorbing pipe 21. Along the radial direction of the axis of the air outlet pipe 1, the V-shaped tip of a sound insulation box 23 located below is in the V-shaped opening groove of a sound insulation box 23 located above.

[0041] Refer to Figure 1 , Figure 2 and Figure 3 , an exhaust passage 24 is formed between two adjacent sound insulation boxes 23. A sound-absorbing member 25 for adsorbing noise is arranged on the sound insulation boxes 23. The sound-absorbing member 25 includes sound-absorbing cotton 251 filled in the internal cavity of the sound insulation boxes 23. A plurality of sound-absorbing holes 252 communicating with the inside are opened on the V-shaped concave side of the sound insulation boxes 23.

[0042] When the noise generated by the air compressor is transmitted to the air outlet pipe 1, the exhaust passage 24 formed by the sound insulation box 23 in a V shape plays a role in blocking the propagation of the noise, causing the noise to continuously reflect and refract within the exhaust passage 24. The sound-absorbing coating on the surface of the sound insulation box 23 will adsorb the noise in the form of heat. Most of the noise is reflected through the sound-absorbing holes 252 into the internal cavity of the sound insulation box 23, and through the porous structure of the sound-absorbing cotton 251, the noise is continuously reflected, refracted, and absorbed, thereby eliminating the noise.

[0043] The implementation principle of Embodiment 1 is: When the noise generated by the air compressor is transmitted to the air outlet pipe 1, the exhaust passage 24 formed by the sound insulation box 23 in a V shape plays a role in blocking the propagation of the noise, causing the noise to continuously reflect and refract within the exhaust passage 24. The sound-absorbing coating on the surface of the sound insulation box 23 will adsorb the noise in the form of heat. Most of the noise is reflected through the sound-absorbing holes 252 into the internal cavity of the sound insulation box 23, and through the porous structure of the sound-absorbing cotton 251, the noise is continuously reflected, refracted, and absorbed, thereby eliminating the noise.

[0044] Embodiment 2

[0045] Reference Figure 4 and Figure 5 In this embodiment, the difference from Embodiment 1 is that: at the installation notch 3 in the air outlet pipe 1, a chute rail 5 with a concave cross-section is bolted. The length direction of the chute rail 5 is parallel to the insertion direction of the sound-absorbing pipe 21. A slide bar 6 that is slidably matched with the chute rail 5 is welded on the sound-absorbing pipe 21. A plurality of rollers 7 are rotatably connected to the slide bar 6. The plurality of rollers 7 are arranged along the length direction of the slide bar 6, and the rollers 7 are in rolling cooperation with the inner side of the chute rail 5.

[0046] Reference Figure 4 and Figure 5 On the air outlet pipe 1, a brush dust rack 8 with a V-shaped cross-section is bolted. The brush dust rack 8 is located between two adjacent sound insulation boxes 23. A number of bristles 9 are adhered to the brush dust rack 8, and the bristles 9 abut against the sound-absorbing holes 252. On the air outlet pipe 1 and below the brush dust rack 8, a dust guide groove 10 with a V-shaped cross-section is bolted. Both V-shaped ends of the dust guide groove 10 are communicated with a dust discharge pipe 11, and the dust discharge pipe 11 extends outside the air outlet pipe 1.

[0047] The implementation principle of Embodiment 2 is: When the worker pulls out the sound-absorbing pipe 21, the bristles 9 on the brush dust rack 8 brush the sound-absorbing holes 252 in the V-shaped groove of the sound insulation box 23, causing the dust attached to the sound-absorbing holes 252 to be brushed off into the dust guide groove 10. The brushed-off dust slides down the inclined surface in the dust guide groove 10 into the dust discharge pipe 11, and then is discharged outside the air outlet pipe 1 through the dust discharge pipe 11.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. An air compressor outlet muffler, characterized in that: It includes an air outlet pipe (1) which is arranged at the air outlet of an air compressor. A silencing component (2) for absorbing the noise in the air outlet pipe (1) is arranged on the air outlet pipe (1). The silencing component (2) includes a silencing pipe (21) detachably arranged on the air outlet pipe (1). The silencing pipe (21) is coaxially arranged with the air outlet pipe (1). A fixing member (22) is arranged on the air outlet pipe (1) and is used to fix the silencing pipe (21) on the air outlet pipe (1). A plurality of sound insulation boxes (23) are arranged in the silencing pipe (21). The plurality of sound insulation boxes (23) are uniformly arranged along the radial direction of the axis of the silencing pipe (21). An air exhaust channel (24) is formed between two adjacent sound insulation boxes (23). A sound absorption member (25) for adsorbing noise is arranged on the sound insulation box (23).

2. The air compressor outlet muffler according to claim 1, wherein: The cross-section of the sound insulation box (23) is V-shaped and hollow inside. The sound absorption member (25) includes sound absorption cotton (251) arranged inside the sound insulation box (23). A plurality of sound silencing holes (252) communicating with its inside are opened on the V-shaped concave side of the sound insulation box (23).

3. The air compressor outlet muffler according to claim 2, characterized in that: Along the radial direction of the axis of the air outlet pipe (1), the V-shaped tip of the sound insulation box (23) located below is in the V-shaped opening groove of the sound insulation box (23) located above.

4. The air compressor outlet muffler according to claim 2, characterized in that: An installation slot (3) for inserting the silencing pipe (21) is opened between the inner and outer side walls of the air outlet pipe (1). The fixing member (22) includes a fixing plate (221) arranged on the silencing pipe (21). A fixing bolt (222) is bolted on the air outlet pipe (1). The fixing plate (221) is slidably sleeved on the fixing bolt (222).

5. A muffler for the air outlet of an air compressor according to claim 1, characterized in that: A plurality of water baffle plates (4) are arranged on the air outlet pipe (1). The plurality of water baffle plates (4) are uniformly arranged along the radial direction of the axis of the silencing pipe (21). The water baffle plates (4) are inclined away from the sound insulation box (23) in the direction from top to bottom.

6. The air compressor outlet muffler according to claim 4, characterized in that: A chute rail (5) with a concave cross-section is arranged at the installation slot (3) of the air outlet pipe (1). The length direction of the chute rail (5) is parallel to the insertion direction of the silencing pipe (21). A sliding strip (6) which is slidably matched with the chute rail (5) is arranged on the silencing pipe (21). A plurality of rollers (7) are rotatably arranged on the sliding strip (6). The plurality of rollers (7) are arranged along the length direction of the sliding strip (6). The rollers (7) are in rolling cooperation with the chute rail (5).

7. The air compressor outlet muffler according to claim 6, wherein: A dust brushing frame (8) with a V-shaped cross-section is arranged on the air outlet pipe (1). The dust brushing frame (8) is located between two adjacent sound insulation boxes (23). A plurality of bristles (9) are arranged on the dust brushing frame (8). The bristles (9) abut against the sound silencing holes (252).

8. The air compressor outlet muffler according to claim 7, characterized in that: A dust guide groove (10) with a V-shaped cross-section is provided on the air outlet pipe (1) and below the dust brushing frame (8). Both V-shaped ends of the dust guide groove (10) are communicated with a dust discharge pipe (11), and the dust discharge pipe (11) extends outside the air outlet pipe (1).

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